diff --git a/composer.json b/composer.json
index 746ab326d2f..ecfd7f7eb71 100644
--- a/composer.json
+++ b/composer.json
@@ -53,6 +53,7 @@
         "composer/package-versions-deprecated": "1.11.99.5",
         "composer/semver": "3.4.3",
         "endroid/qr-code": "5.1.0",
+        "ezyang/htmlpurifier": "4.17.0",
         "guzzlehttp/guzzle": "7.9.2",
         "jaybizzle/crawler-detect": "^1.2",
         "laminas/laminas-cache": "3.12.2",
diff --git a/composer.lock b/composer.lock
index 3ca06deea52..57a72c735af 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "540c871f9b843a7da019964d94455bf4",
+    "content-hash": "1bb2a6857e13815b065e34b819acb716",
     "packages": [
         {
             "name": "ahand/mobileesp",
@@ -1214,6 +1214,67 @@
             ],
             "time": "2024-09-08T08:52:55+00:00"
         },
+        {
+            "name": "ezyang/htmlpurifier",
+            "version": "v4.17.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ezyang/htmlpurifier.git",
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/bbc513d79acf6691fa9cf10f192c90dd2957f18c",
+                "reference": "bbc513d79acf6691fa9cf10f192c90dd2957f18c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
+            },
+            "require-dev": {
+                "cerdic/css-tidy": "^1.7 || ^2.0",
+                "simpletest/simpletest": "dev-master"
+            },
+            "suggest": {
+                "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+                "ext-bcmath": "Used for unit conversion and imagecrash protection",
+                "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+                "ext-tidy": "Used for pretty-printing HTML"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "library/HTMLPurifier.composer.php"
+                ],
+                "psr-0": {
+                    "HTMLPurifier": "library/"
+                },
+                "exclude-from-classmap": [
+                    "/library/HTMLPurifier/Language/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-2.1-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Edward Z. Yang",
+                    "email": "admin@htmlpurifier.org",
+                    "homepage": "http://ezyang.com"
+                }
+            ],
+            "description": "Standards compliant HTML filter written in PHP",
+            "homepage": "http://htmlpurifier.org/",
+            "keywords": [
+                "html"
+            ],
+            "support": {
+                "issues": "https://github.com/ezyang/htmlpurifier/issues",
+                "source": "https://github.com/ezyang/htmlpurifier/tree/v4.17.0"
+            },
+            "time": "2023-11-17T15:01:25+00:00"
+        },
         {
             "name": "filp/whoops",
             "version": "2.16.0",
@@ -14408,7 +14469,7 @@
     "platform": {
         "php": ">=8.1"
     },
-    "platform-dev": [],
+    "platform-dev": {},
     "platform-overrides": {
         "php": "8.1"
     },
diff --git a/config/vufind/config.ini b/config/vufind/config.ini
index 068680c25c0..ba64c91d2f7 100644
--- a/config/vufind/config.ini
+++ b/config/vufind/config.ini
@@ -2641,3 +2641,10 @@ description = "The REST API provides access to search functions and records cont
 ; By default, VuFind sorts text in a locale-agnostic way; if this setting is
 ; turned on, the current user-selected locale will impact sort order.
 ;use_locale_sorting = true
+
+; By default HTML is not allowed in record fields, but support for sanitized HTML
+; can be enabled per field type.
+[HTML_Fields]
+;title = false
+;title-alt = false
+;summary = false
diff --git a/module/VuFind/src/VuFind/Content/Summaries/Demo.php b/module/VuFind/src/VuFind/Content/Summaries/Demo.php
index 2e7d91deacc..c3a22f191c9 100644
--- a/module/VuFind/src/VuFind/Content/Summaries/Demo.php
+++ b/module/VuFind/src/VuFind/Content/Summaries/Demo.php
@@ -29,6 +29,8 @@
 
 namespace VuFind\Content\Summaries;
 
+use VuFind\String\PropertyString;
+
 /**
  * Demo (fake data) summaries content loader.
  *
@@ -56,6 +58,8 @@ public function loadByIsbn($key, \VuFindCode\ISBN $isbnObj)
         return [
             'Demo summary key: ' . $key,
             'Demo summary ISBN: ' . $isbnObj->get13(),
+            (new PropertyString('Demo non-HTML summary'))
+                ->setHtml('<strong>Demo HTML Summary:</strong><ul><li>Item 1</li><li>Item 2</li></ul>'),
         ];
     }
 }
diff --git a/module/VuFind/src/VuFind/Content/Summaries/Syndetics.php b/module/VuFind/src/VuFind/Content/Summaries/Syndetics.php
index 35fe21a4f36..022585b3bd9 100644
--- a/module/VuFind/src/VuFind/Content/Summaries/Syndetics.php
+++ b/module/VuFind/src/VuFind/Content/Summaries/Syndetics.php
@@ -29,6 +29,8 @@
 
 namespace VuFind\Content\Summaries;
 
+use VuFind\String\PropertyString;
+
 /**
  * Syndetics Summaries content loader.
  *
@@ -110,7 +112,7 @@ public function loadByIsbn($key, \VuFindCode\ISBN $isbnObj)
                 // If we have syndetics plus, we don't actually want the content
                 // we'll just stick in the relevant div
                 if ($this->usePlus) {
-                    $summaries[] = $sourceInfo['div'];
+                    $summaries[] = PropertyString::fromHtml($sourceInfo['div'])->setHtmlTrusted(true);
                 } else {
                     // Get the marc field for summaries. (520)
                     $nodes = $xmldoc2->GetElementsbyTagName('Fld520');
diff --git a/module/VuFind/src/VuFind/RecordDriver/DefaultRecord.php b/module/VuFind/src/VuFind/RecordDriver/DefaultRecord.php
index f3a8317daca..40f698a021c 100644
--- a/module/VuFind/src/VuFind/RecordDriver/DefaultRecord.php
+++ b/module/VuFind/src/VuFind/RecordDriver/DefaultRecord.php
@@ -1271,9 +1271,9 @@ public function getSystemDetails()
     public function getSummary()
     {
         // We need to return an array, so if we have a description, turn it into an
-        // array (it should be a flat string according to the default schema, but we
-        // might as well support the array case just to be on the safe side:
-        return (array)($this->fields['description'] ?? []);
+        // array (it is a flat string in the default Solr schema, but we also
+        // support multivalued fields for other backends):
+        return $this->getFieldAsArray('description');
     }
 
     /**
@@ -1816,4 +1816,23 @@ public function getCoordinateLabels()
     {
         return (array)($this->fields['long_lat_label'] ?? []);
     }
+
+    /**
+     * Get a field as an array
+     *
+     * @param string $field Field
+     *
+     * @return array
+     */
+    protected function getFieldAsArray(string $field): array
+    {
+        // Make sure to return only non-empty values:
+        $value = $this->fields['description'] ?? '';
+        if ('' === $value) {
+            return [];
+        }
+        // Avoid casting since description can be a PropertyString too (and casting would return an array of object
+        // properties):
+        return is_array($value) ? $value : [$value];
+    }
 }
diff --git a/module/VuFind/src/VuFind/String/PropertyString.php b/module/VuFind/src/VuFind/String/PropertyString.php
new file mode 100644
index 00000000000..5341f8dda05
--- /dev/null
+++ b/module/VuFind/src/VuFind/String/PropertyString.php
@@ -0,0 +1,224 @@
+<?php
+
+/**
+ * Class for a string with additional properties.
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2024.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  String
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org Main Site
+ */
+
+namespace VuFind\String;
+
+use function array_key_exists;
+
+/**
+ * Class for a string with additional properties.
+ *
+ * @category VuFind
+ * @package  String
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org Main Site
+ */
+class PropertyString implements PropertyStringInterface
+{
+    /**
+     * Constructor
+     *
+     * @param string $string     String value
+     * @param array  $properties Associative array of any additional properties. Use a custom prefix for locally
+     * defined properties. Double underscore is a reserved prefix, and currently the following keys are defined:
+     * __ids  Identifiers (e.g. subject URIs)
+     * __html HTML presentation
+     */
+    public function __construct(protected string $string, protected array $properties = [])
+    {
+    }
+
+    /**
+     * Create a PropertyString from an HTML string
+     *
+     * @param string $html       HTML
+     * @param array  $properties Any additional properties (see __construct)
+     *
+     * @return PropertyString
+     */
+    public static function fromHtml(string $html, array $properties = []): PropertyString
+    {
+        return (new PropertyString(strip_tags($html), $properties))->setHtml($html);
+    }
+
+    /**
+     * Set string value
+     *
+     * @param string $str String value
+     *
+     * @return static
+     */
+    public function setString(string $str): static
+    {
+        $this->string = $str;
+        return $this;
+    }
+
+    /**
+     * Get string value
+     *
+     * @return string
+     */
+    public function getString(): string
+    {
+        return $this->string;
+    }
+
+    /**
+     * Set HTML string
+     *
+     * @param string $html HTML
+     *
+     * @return static
+     */
+    public function setHtml(string $html): static
+    {
+        $this['__html'] = $html;
+        return $this;
+    }
+
+    /**
+     * Get HTML string
+     *
+     * Note: This could contain anything and must be sanitized for display unless marked trusted
+     * (see setHtmlTrusted/getHtmlTrusted).
+     *
+     * @return ?string
+     */
+    public function getHtml(): ?string
+    {
+        return $this['__html'];
+    }
+
+    /**
+     * Set flag for trusted HTML
+     *
+     * @param bool $trusted Is the HTML content trusted?
+     *
+     * @return static
+     */
+    public function setHtmlTrusted(bool $trusted): static
+    {
+        $this['__trustedHtml'] = $trusted;
+        return $this;
+    }
+
+    /**
+     * Get flag for trusted HTML
+     *
+     * @return ?bool
+     */
+    public function getHtmlTrusted(): ?bool
+    {
+        return $this['__trustedHtml'];
+    }
+
+    /**
+     * Set identifiers
+     *
+     * @param array $ids Identifiers
+     *
+     * @return static
+     */
+    public function setIds(array $ids): static
+    {
+        $this['__ids'] = $ids;
+        return $this;
+    }
+
+    /**
+     * Get identifiers
+     *
+     * @return ?array
+     */
+    public function getIds(): ?array
+    {
+        return $this['__ids'];
+    }
+
+    /**
+     * Check if offset exists
+     *
+     * @param mixed $offset Offset
+     *
+     * @return bool
+     */
+    public function offsetExists(mixed $offset): bool
+    {
+        return array_key_exists($offset, $this->properties);
+    }
+
+    /**
+     * Return value of offset
+     *
+     * @param mixed $offset Offset
+     *
+     * @return mixed
+     */
+    public function offsetGet(mixed $offset): mixed
+    {
+        return $this->properties[$offset] ?? null;
+    }
+
+    /**
+     * Set value of offset
+     *
+     * @param mixed $offset Offset
+     * @param mixed $value  Value
+     *
+     * @return void
+     */
+    public function offsetSet(mixed $offset, mixed $value): void
+    {
+        $this->properties[$offset] = $value;
+    }
+
+    /**
+     * Unset value of offset
+     *
+     * @param mixed $offset Offset
+     *
+     * @return void
+     */
+    public function offsetUnset(mixed $offset): void
+    {
+        unset($this->properties[$offset]);
+    }
+
+    /**
+     * Return string value
+     *
+     * @return string
+     */
+    public function __toString(): string
+    {
+        return $this->string;
+    }
+}
diff --git a/module/VuFind/src/VuFind/String/PropertyStringInterface.php b/module/VuFind/src/VuFind/String/PropertyStringInterface.php
new file mode 100644
index 00000000000..0e2aec82b64
--- /dev/null
+++ b/module/VuFind/src/VuFind/String/PropertyStringInterface.php
@@ -0,0 +1,109 @@
+<?php
+
+/**
+ * Interface for a string with additional properties.
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2024.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  String
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org Main Site
+ */
+
+namespace VuFind\String;
+
+/**
+ * Interface for a string with additional properties.
+ *
+ * @category VuFind
+ * @package  String
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org Main Site
+ */
+interface PropertyStringInterface extends \ArrayAccess, \Stringable
+{
+    /**
+     * Set string value
+     *
+     * @param string $str String value
+     *
+     * @return static
+     */
+    public function setString(string $str): static;
+
+    /**
+     * Get string value
+     *
+     * @return string
+     */
+    public function getString(): string;
+
+    /**
+     * Set HTML string
+     *
+     * @param string $html HTML
+     *
+     * @return static
+     */
+    public function setHtml(string $html): static;
+
+    /**
+     * Get HTML string
+     *
+     * Note: This could contain anything and must be sanitized for display unless marked trusted
+     * (see setHtmlTrusted/getHtmlTrusted).
+     *
+     * @return ?string
+     */
+    public function getHtml(): ?string;
+
+    /**
+     * Set flag for trusted HTML
+     *
+     * @param bool $trusted Is the HTML content trusted?
+     *
+     * @return static
+     */
+    public function setHtmlTrusted(bool $trusted): static;
+
+    /**
+     * Get flag for trusted HTML
+     *
+     * @return ?bool
+     */
+    public function getHtmlTrusted(): ?bool;
+
+    /**
+     * Set identifiers
+     *
+     * @param array $ids Identifiers
+     *
+     * @return static
+     */
+    public function setIds(array $ids): static;
+
+    /**
+     * Get identifiers
+     *
+     * @return ?array
+     */
+    public function getIds(): ?array;
+}
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/CleanHtml.php b/module/VuFind/src/VuFind/View/Helper/Root/CleanHtml.php
new file mode 100644
index 00000000000..fea6d838946
--- /dev/null
+++ b/module/VuFind/src/VuFind/View/Helper/Root/CleanHtml.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * HTML Cleaner view helper
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2019-2024.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     http://vufind.org   Main Site
+ */
+
+namespace VuFind\View\Helper\Root;
+
+use Closure;
+
+/**
+ * HTML Cleaner view helper
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     http://vufind.org   Main Site
+ */
+class CleanHtml extends \Laminas\View\Helper\AbstractHelper
+{
+    /**
+     * Purifiers
+     *
+     * @var \HTMLPurifier[]
+     */
+    protected $purifiers = [];
+
+    /**
+     * Constructor
+     *
+     * @param Closure $purifierFactory Purifier factory callback
+     */
+    public function __construct(protected Closure $purifierFactory)
+    {
+    }
+
+    /**
+     * Clean up HTML
+     *
+     * @param string $html        HTML
+     * @param bool   $targetBlank Whether to add target=_blank to outgoing links
+     * @param string $context     Display context (e.g. 'heading')
+     *
+     * @return string
+     */
+    public function __invoke(string $html, bool $targetBlank = false, string $context = 'default'): string
+    {
+        if (!str_contains($html, '<')) {
+            return $html;
+        }
+        $key = ($targetBlank ? 'blank' : 'noblank') . "_$context";
+        if (!isset($this->purifiers[$key])) {
+            $this->purifiers[$key] = ($this->purifierFactory)(compact('targetBlank', 'context'));
+        }
+        return $this->purifiers[$key]->purify($html);
+    }
+}
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/CleanHtmlFactory.php b/module/VuFind/src/VuFind/View/Helper/Root/CleanHtmlFactory.php
new file mode 100644
index 00000000000..abefb146acb
--- /dev/null
+++ b/module/VuFind/src/VuFind/View/Helper/Root/CleanHtmlFactory.php
@@ -0,0 +1,156 @@
+<?php
+
+/**
+ * CleanHtml helper factory.
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2020-2024.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @author   Aleksi Peebles <aleksi.peebles@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+
+namespace VuFind\View\Helper\Root;
+
+use Closure;
+use HTMLPurifier;
+use HTMLPurifier_Config;
+use Laminas\ServiceManager\Exception\ServiceNotCreatedException;
+use Laminas\ServiceManager\Exception\ServiceNotFoundException;
+use Laminas\ServiceManager\Factory\FactoryInterface;
+use Psr\Container\ContainerExceptionInterface as ContainerException;
+use Psr\Container\ContainerInterface;
+
+/**
+ * CleanHtml helper factory.
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @author   Aleksi Peebles <aleksi.peebles@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+class CleanHtmlFactory implements FactoryInterface
+{
+    /**
+     * Service manager
+     *
+     * @var ContainerInterface
+     */
+    protected ContainerInterface $container;
+
+    /**
+     * Create an object
+     *
+     * @param ContainerInterface $container     Service manager
+     * @param string             $requestedName Service being created
+     * @param null|array         $options       Extra options (optional)
+     *
+     * @return object
+     *
+     * @throws ServiceNotFoundException if unable to resolve the service.
+     * @throws ServiceNotCreatedException if an exception is raised when
+     * creating a service.
+     * @throws ContainerException if any other error occurs
+     */
+    public function __invoke(
+        ContainerInterface $container,
+        $requestedName,
+        ?array $options = null
+    ) {
+        if (!empty($options)) {
+            throw new \Exception('Unexpected options sent to factory.');
+        }
+
+        $this->container = $container;
+        return new $requestedName(Closure::fromCallable([$this, 'createPurifier']));
+    }
+
+    /**
+     * Create a purifier instance.
+     *
+     * N.B. This is a relatively slow method.
+     *
+     * @param array $options Additional options. Currently supported:
+     *   bool   targetBlank Whether to add target="_blank" to external links
+     *   string context     Rendering context ('default' or 'heading')
+     *
+     * @return HTMLPurifier
+     */
+    protected function createPurifier(array $options): HTMLPurifier
+    {
+        $config = \HTMLPurifier_Config::createDefault();
+        // Set cache path to the object cache
+        $cacheDir
+            = $this->container->get(\VuFind\Cache\Manager::class)->getCache('object')->getOptions()->getCacheDir();
+        if ($cacheDir) {
+            $config->set('Cache.SerializerPath', $cacheDir);
+        }
+        if ($options['targetBlank'] ?? false) {
+            $config->set('HTML.Nofollow', 1);
+            $config->set('HTML.TargetBlank', 1);
+        }
+
+        // Setting the following option makes purifier’s DOMLex pass the
+        // LIBXML_PARSEHUGE option to DOMDocument::loadHtml method. This in turn
+        // ensures that PHP calls htmlCtxtUseOptions (see
+        // github.com/php/php-src/blob/PHP-8.1.14/ext/dom/document.c#L1870),
+        // which ensures that the libxml2 options (namely keepBlanks) are set up
+        // properly, and whitespace nodes are preserved. This should not be an
+        // issue from libxml2 version 2.9.5, but during testing the issue was
+        // still intermittently present, and this setting should remain in place.
+        $config->set('Core.AllowParseManyTags', true);
+
+        $this->setAdditionalConfiguration($config, $options);
+        return new \HTMLPurifier($config);
+    }
+
+    /**
+     * Sets additional configuration
+     *
+     * @param HTMLPurifier_Config $config  Configuration
+     * @param array               $options Additional options
+     *
+     * @return void
+     */
+    protected function setAdditionalConfiguration(HTMLPurifier_Config $config, array $options): void
+    {
+        $context = $options['context'] ?? 'default';
+        if ('heading' === $context) {
+            // Limit elements allowed in headings
+            // (see https://developer.mozilla.org/en-US/docs/Web/HTML/Content_categories#phrasing_content for more
+            // information):
+            $config->set('HTML.AllowedElements', 'a,b,br,em,i,span');
+        } else {
+            // Add support for details and summary elements:
+            $definition = $config->getHTMLDefinition(true);
+            $definition->addElement(
+                'details',
+                'Block',
+                'Flow',
+                'Common',
+                ['open' => new \HTMLPurifier_AttrDef_HTML_Bool(true)]
+            );
+            $definition->addElement('summary', 'Block', 'Flow', 'Common');
+        }
+    }
+}
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtml.php b/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtml.php
new file mode 100644
index 00000000000..63b8015ad51
--- /dev/null
+++ b/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtml.php
@@ -0,0 +1,105 @@
+<?php
+
+/**
+ * View helper for escaping or cleaning HTML
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2024-2025.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+
+namespace VuFind\View\Helper\Root;
+
+use Laminas\Escaper\Escaper;
+use Laminas\View\Helper\AbstractHelper;
+use VuFind\String\PropertyStringInterface;
+
+/**
+ * View helper for escaping or cleaning HTML
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+class EscapeOrCleanHtml extends AbstractHelper
+{
+    /**
+     * Field types that allow HTML
+     *
+     * @var array
+     */
+    protected array $htmlFields;
+
+    /**
+     * Constructor
+     *
+     * @param Escaper   $escaper   Escaper
+     * @param CleanHtml $cleanHtml Clean HTML helper
+     * @param array     $config    VuFind configuration
+     */
+    public function __construct(protected Escaper $escaper, protected CleanHtml $cleanHtml, array $config)
+    {
+        $this->htmlFields = (array)($config['HTML_Fields'] ?? []);
+    }
+
+    /**
+     * Invoke this helper: escape a value
+     *
+     * @param ?string $value     Value to escape
+     * @param ?string $fieldType Field type (for fields that allow sanitized HTML)
+     * @param ?bool   $allowHtml Whether to allow sanitized HTML if passed a PropertyString
+     * @param string  $context   Rendering context for cleaning HTML
+     *
+     * @return mixed Given a string, returns an escaped string, otherwise returns self
+     */
+    public function __invoke(
+        $value = null,
+        ?string $fieldType = null,
+        ?bool $allowHtml = null,
+        string $context = 'default'
+    ) {
+        if (null === $value) {
+            return $this;
+        }
+        if ($value instanceof PropertyStringInterface) {
+            if (($allowHtml ?? ($fieldType && ($this->htmlFields[$fieldType] ?? false))) && $html = $value->getHtml()) {
+                return $value->getHtmlTrusted() ? $html : ($this->cleanHtml)($html, context: $context);
+            }
+            $value = (string)$value;
+        }
+        return $this->escape($value);
+    }
+
+    /**
+     * Escape a string
+     *
+     * @param string $value String to escape
+     *
+     * @return string
+     */
+    protected function escape($value)
+    {
+        return $this->escaper->escapeHtml($value);
+    }
+}
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtmlFactory.php b/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtmlFactory.php
new file mode 100644
index 00000000000..01c58c788db
--- /dev/null
+++ b/module/VuFind/src/VuFind/View/Helper/Root/EscapeOrCleanHtmlFactory.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * EscapeOrCleanHtml helper factory.
+ *
+ * PHP version 8
+ *
+ * Copyright (C) The National Library of Finland 2024-2025.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+
+namespace VuFind\View\Helper\Root;
+
+use Laminas\Escaper\Escaper;
+use Laminas\ServiceManager\Exception\ServiceNotCreatedException;
+use Laminas\ServiceManager\Exception\ServiceNotFoundException;
+use Laminas\ServiceManager\Factory\FactoryInterface;
+use Psr\Container\ContainerExceptionInterface as ContainerException;
+use Psr\Container\ContainerInterface;
+
+/**
+ * EscapeOrCleanHtml helper factory.
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Ere Maijala <ere.maijala@helsinki.fi>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+class EscapeOrCleanHtmlFactory implements FactoryInterface
+{
+    /**
+     * Create an object
+     *
+     * @param ContainerInterface $container     Service manager
+     * @param string             $requestedName Service being created
+     * @param null|array         $options       Extra options (optional)
+     *
+     * @return object
+     *
+     * @throws ServiceNotFoundException if unable to resolve the service.
+     * @throws ServiceNotCreatedException if an exception is raised when
+     * creating a service.
+     * @throws ContainerException&\Throwable if any other error occurs
+     */
+    public function __invoke(
+        ContainerInterface $container,
+        $requestedName,
+        ?array $options = null
+    ) {
+        if (!empty($options)) {
+            throw new \Exception('Unexpected options sent to factory.');
+        }
+
+        $helpers = $container->get('ViewHelperManager');
+        $config = $container->get(\VuFind\Config\PluginManager::class)->get('config');
+        return new $requestedName(new Escaper(), $helpers->get('cleanHtml'), $config->toArray());
+    }
+}
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/RecordDataFormatter.php b/module/VuFind/src/VuFind/View/Helper/Root/RecordDataFormatter.php
index b9b4eb5f988..9686d9cfb39 100644
--- a/module/VuFind/src/VuFind/View/Helper/Root/RecordDataFormatter.php
+++ b/module/VuFind/src/VuFind/View/Helper/Root/RecordDataFormatter.php
@@ -33,6 +33,7 @@
 
 use Laminas\View\Helper\AbstractHelper;
 use VuFind\RecordDriver\AbstractBase as RecordDriver;
+use VuFind\String\PropertyStringInterface;
 
 use function call_user_func;
 use function count;
@@ -125,6 +126,9 @@ protected function sortCallback($a, $b)
      */
     protected function allowValue($value, $options, $ignoreCombineAlt = false)
     {
+        if ($value instanceof PropertyStringInterface) {
+            $value = (string)$value;
+        }
         if (!empty($value) || ($ignoreCombineAlt && ($options['renderType'] ?? 'Simple') == 'CombineAlt')) {
             return true;
         }
diff --git a/module/VuFind/src/VuFind/View/Helper/Root/Truncate.php b/module/VuFind/src/VuFind/View/Helper/Root/Truncate.php
index 4bf37e258a5..d9dfc2623e2 100644
--- a/module/VuFind/src/VuFind/View/Helper/Root/Truncate.php
+++ b/module/VuFind/src/VuFind/View/Helper/Root/Truncate.php
@@ -30,9 +30,7 @@
 namespace VuFind\View\Helper\Root;
 
 use Laminas\View\Helper\AbstractHelper;
-
-use function function_exists;
-use function strlen;
+use VuFind\String\PropertyStringInterface;
 
 /**
  * Truncate view helper
@@ -48,23 +46,19 @@ class Truncate extends AbstractHelper
     /**
      * Truncate a string
      *
-     * @param string $str    the string to be truncated
-     * @param string $len    how long the truncated string will be
-     * @param string $append what to add to the end of the string to
+     * @param string|PropertyStringInterface $str    the string to be truncated
+     * @param string                         $len    how long the truncated string will be
+     * @param string                         $append what to add to the end of the string to
      * indicate it's been truncated
      *
-     * @return string
+     * @return string|PropertyStringInterface
      */
     public function __invoke($str, $len, $append = '...')
     {
         if ($len == 0) {
             return '';
-        } elseif (strlen($str) > $len) {
-            if (function_exists('mb_substr')) {
-                return trim(mb_substr($str, 0, $len, 'UTF-8')) . $append;
-            } else {
-                return trim(substr($str, 0, $len)) . $append;
-            }
+        } elseif (mb_strlen((string)$str, 'UTF-8') > $len) {
+            return trim(mb_substr((string)$str, 0, $len, 'UTF-8')) . $append;
         }
         return $str;
     }
diff --git a/themes/bootstrap3/templates/RecordDriver/DefaultRecord/core.phtml b/themes/bootstrap3/templates/RecordDriver/DefaultRecord/core.phtml
index 3d5a8741d9a..5d33519deae 100644
--- a/themes/bootstrap3/templates/RecordDriver/DefaultRecord/core.phtml
+++ b/themes/bootstrap3/templates/RecordDriver/DefaultRecord/core.phtml
@@ -3,13 +3,14 @@
 ?>
 <div class="media"<?=$this->schemaOrg()->getAttributes(['vocab' => 'http://schema.org/', 'resource' => '#record', 'typeof' => $this->schemaOrg()->getRecordTypes($this->driver)])?>>
   <?php
-    $QRCode = $this->record($this->driver)->getQRCode('core');
-    $largeImage = $this->record($this->driver)->getThumbnail('large');
+    $recordHelper = $this->record($this->driver);
+    $QRCode = $recordHelper->getQRCode('core');
+    $largeImage = $recordHelper->getThumbnail('large');
     $linkAttributes = $largeImage ? ['href' => $largeImage, 'data-lightbox-image' => 'true'] : [];
-    $coverDetails = $this->record($this->driver)->getCoverDetails('core', 'medium', $linkAttributes);
+    $coverDetails = $recordHelper->getCoverDetails('core', 'medium', $linkAttributes);
     $cover = $coverDetails['html'];
     $preview = ($this->previewOverride ?? false)
-      ? $this->previewOverride : $this->record($this->driver)->getPreviews();
+      ? $this->previewOverride : $recordHelper->getPreviews();
     $rating = $this->driver->isRatingAllowed();
   ?>
   <?php if ($QRCode || $cover || $preview || $rating): ?>
@@ -28,7 +29,7 @@
 
       <?php /* Display rating if enabled: */ ?>
       <?php if ($rating): ?>
-        <?=$this->record($this->driver)->renderTemplate('rating.phtml')?>
+        <?=$recordHelper->renderTemplate('rating.phtml')?>
       <?php endif; ?>
 
       <?php // if you have a preview tab but want to move or remove the preview link
@@ -44,7 +45,7 @@
   <?php endif; ?>
   <div class="media-body">
 
-    <h1<?=$this->schemaOrg()->getAttributes(['property' => 'name'])?>><?=$this->escapeHtml($this->driver->getShortTitle() . ' ' . $this->driver->getSubtitle() . ' ' . $this->driver->getTitleSection())?></h1>
+    <h1<?=$this->schemaOrg()->getAttributes(['property' => 'name'])?>><?=$this->escapeOrCleanHtml($this->driver->getShortTitle() . ' ' . $this->driver->getSubtitle() . ' ' . $this->driver->getTitleSection(), 'title', context: 'heading')?></h1>
 
     <?php if ($this->driver->getExtraDetail('cached_record') && !$this->translationEmpty('cached_record_warning')): ?>
       <div class="alert alert-warning">
@@ -55,7 +56,7 @@
 
     <?php foreach ($this->driver->tryMethod('getFullTitlesAltScript', [], []) as $altTitle): ?>
       <div class="title-alt">
-        <?=$this->escapeHtml($altTitle)?>
+        <?=$this->escapeOrCleanHtml($altTitle, 'title-alt')?>
       </div>
     <?php endforeach; ?>
 
@@ -65,14 +66,15 @@
     <?php endif; ?>
 
     <?php if ($this->searchOptions($this->driver->getSourceIdentifier())->getVersionsAction()): ?>
-      <?=$this->record($this->driver)->renderTemplate('versions-link.phtml')?>
+      <?=$recordHelper->renderTemplate('versions-link.phtml')?>
     <?php endif; ?>
 
     <?php $summary = $this->driver->getSummary(); ?>
-    <?php if ($summary = isset($summary[0]) ? $this->escapeHtml($summary[0]) : false): ?>
-      <p><?=$this->truncate($summary, 300)?></p>
+    <?php if ($summary = $summary[0] ?? null): ?>
+      <?php $shortSummary = $this->truncate($summary, 300); ?>
+      <p><?=$this->escapeOrCleanHtml($shortSummary, $summary, 'summary')?></p>
 
-      <?php if (strlen($summary) > 300): ?>
+      <?php if ($shortSummary !== $summary): ?>
         <p><a href="<?=$this->escapeHtmlAttr($this->recordLinker()->getTabUrl($this->driver, 'Description'))?>#tabnav"><?=$this->transEsc('Full description')?></a></p>
       <?php endif; ?>
     <?php endif; ?>
@@ -86,7 +88,7 @@
 
     <?php /* Display Main Details */ ?>
     <?=
-      $this->record($this->driver)->renderTemplate(
+      $recordHelper->renderTemplate(
           'core-fields.phtml',
           [
             'driver' => $this->driver,
diff --git a/themes/bootstrap3/templates/RecordDriver/DefaultRecord/data-summary.phtml b/themes/bootstrap3/templates/RecordDriver/DefaultRecord/data-summary.phtml
index bd4333cb4e5..99b13a9bc1c 100644
--- a/themes/bootstrap3/templates/RecordDriver/DefaultRecord/data-summary.phtml
+++ b/themes/bootstrap3/templates/RecordDriver/DefaultRecord/data-summary.phtml
@@ -1,10 +1,17 @@
 <?php foreach ($this->driver->getSummary() as $summary): ?>
-  <?=$this->escapeHtml($summary) ?><br>
+  <?=$this->escapeOrCleanHtml($summary, allowHtml: true) ?><br>
 <?php endforeach; ?>
 <?php $isbn = $this->driver->getCleanISBN(); ?>
 <?php foreach ($this->summaries($isbn) as $provider => $content): ?>
-  <?php foreach ($content as $summary): ?>
-    <?php $htmlContent = str_starts_with($summary, '<') && str_ends_with($summary, '>'); ?>
-    <?=$htmlContent ? $summary : ($this->escapeHtml($summary) . '<br>')?>
-  <?php endforeach; ?>
+  <?=
+    implode(
+        '<br>',
+        array_map(
+            function ($summary) {
+                return $this->escapeOrCleanHtml($summary, allowHtml: true);
+            },
+            $content
+        )
+    )
+  ?>
 <?php endforeach; ?>
diff --git a/themes/bootstrap5/templates/RecordDriver/DefaultRecord/core.phtml b/themes/bootstrap5/templates/RecordDriver/DefaultRecord/core.phtml
index 3d5a8741d9a..5d33519deae 100644
--- a/themes/bootstrap5/templates/RecordDriver/DefaultRecord/core.phtml
+++ b/themes/bootstrap5/templates/RecordDriver/DefaultRecord/core.phtml
@@ -3,13 +3,14 @@
 ?>
 <div class="media"<?=$this->schemaOrg()->getAttributes(['vocab' => 'http://schema.org/', 'resource' => '#record', 'typeof' => $this->schemaOrg()->getRecordTypes($this->driver)])?>>
   <?php
-    $QRCode = $this->record($this->driver)->getQRCode('core');
-    $largeImage = $this->record($this->driver)->getThumbnail('large');
+    $recordHelper = $this->record($this->driver);
+    $QRCode = $recordHelper->getQRCode('core');
+    $largeImage = $recordHelper->getThumbnail('large');
     $linkAttributes = $largeImage ? ['href' => $largeImage, 'data-lightbox-image' => 'true'] : [];
-    $coverDetails = $this->record($this->driver)->getCoverDetails('core', 'medium', $linkAttributes);
+    $coverDetails = $recordHelper->getCoverDetails('core', 'medium', $linkAttributes);
     $cover = $coverDetails['html'];
     $preview = ($this->previewOverride ?? false)
-      ? $this->previewOverride : $this->record($this->driver)->getPreviews();
+      ? $this->previewOverride : $recordHelper->getPreviews();
     $rating = $this->driver->isRatingAllowed();
   ?>
   <?php if ($QRCode || $cover || $preview || $rating): ?>
@@ -28,7 +29,7 @@
 
       <?php /* Display rating if enabled: */ ?>
       <?php if ($rating): ?>
-        <?=$this->record($this->driver)->renderTemplate('rating.phtml')?>
+        <?=$recordHelper->renderTemplate('rating.phtml')?>
       <?php endif; ?>
 
       <?php // if you have a preview tab but want to move or remove the preview link
@@ -44,7 +45,7 @@
   <?php endif; ?>
   <div class="media-body">
 
-    <h1<?=$this->schemaOrg()->getAttributes(['property' => 'name'])?>><?=$this->escapeHtml($this->driver->getShortTitle() . ' ' . $this->driver->getSubtitle() . ' ' . $this->driver->getTitleSection())?></h1>
+    <h1<?=$this->schemaOrg()->getAttributes(['property' => 'name'])?>><?=$this->escapeOrCleanHtml($this->driver->getShortTitle() . ' ' . $this->driver->getSubtitle() . ' ' . $this->driver->getTitleSection(), 'title', context: 'heading')?></h1>
 
     <?php if ($this->driver->getExtraDetail('cached_record') && !$this->translationEmpty('cached_record_warning')): ?>
       <div class="alert alert-warning">
@@ -55,7 +56,7 @@
 
     <?php foreach ($this->driver->tryMethod('getFullTitlesAltScript', [], []) as $altTitle): ?>
       <div class="title-alt">
-        <?=$this->escapeHtml($altTitle)?>
+        <?=$this->escapeOrCleanHtml($altTitle, 'title-alt')?>
       </div>
     <?php endforeach; ?>
 
@@ -65,14 +66,15 @@
     <?php endif; ?>
 
     <?php if ($this->searchOptions($this->driver->getSourceIdentifier())->getVersionsAction()): ?>
-      <?=$this->record($this->driver)->renderTemplate('versions-link.phtml')?>
+      <?=$recordHelper->renderTemplate('versions-link.phtml')?>
     <?php endif; ?>
 
     <?php $summary = $this->driver->getSummary(); ?>
-    <?php if ($summary = isset($summary[0]) ? $this->escapeHtml($summary[0]) : false): ?>
-      <p><?=$this->truncate($summary, 300)?></p>
+    <?php if ($summary = $summary[0] ?? null): ?>
+      <?php $shortSummary = $this->truncate($summary, 300); ?>
+      <p><?=$this->escapeOrCleanHtml($shortSummary, $summary, 'summary')?></p>
 
-      <?php if (strlen($summary) > 300): ?>
+      <?php if ($shortSummary !== $summary): ?>
         <p><a href="<?=$this->escapeHtmlAttr($this->recordLinker()->getTabUrl($this->driver, 'Description'))?>#tabnav"><?=$this->transEsc('Full description')?></a></p>
       <?php endif; ?>
     <?php endif; ?>
@@ -86,7 +88,7 @@
 
     <?php /* Display Main Details */ ?>
     <?=
-      $this->record($this->driver)->renderTemplate(
+      $recordHelper->renderTemplate(
           'core-fields.phtml',
           [
             'driver' => $this->driver,
diff --git a/themes/bootstrap5/templates/RecordDriver/DefaultRecord/data-summary.phtml b/themes/bootstrap5/templates/RecordDriver/DefaultRecord/data-summary.phtml
index bd4333cb4e5..99b13a9bc1c 100644
--- a/themes/bootstrap5/templates/RecordDriver/DefaultRecord/data-summary.phtml
+++ b/themes/bootstrap5/templates/RecordDriver/DefaultRecord/data-summary.phtml
@@ -1,10 +1,17 @@
 <?php foreach ($this->driver->getSummary() as $summary): ?>
-  <?=$this->escapeHtml($summary) ?><br>
+  <?=$this->escapeOrCleanHtml($summary, allowHtml: true) ?><br>
 <?php endforeach; ?>
 <?php $isbn = $this->driver->getCleanISBN(); ?>
 <?php foreach ($this->summaries($isbn) as $provider => $content): ?>
-  <?php foreach ($content as $summary): ?>
-    <?php $htmlContent = str_starts_with($summary, '<') && str_ends_with($summary, '>'); ?>
-    <?=$htmlContent ? $summary : ($this->escapeHtml($summary) . '<br>')?>
-  <?php endforeach; ?>
+  <?=
+    implode(
+        '<br>',
+        array_map(
+            function ($summary) {
+                return $this->escapeOrCleanHtml($summary, allowHtml: true);
+            },
+            $content
+        )
+    )
+  ?>
 <?php endforeach; ?>
diff --git a/themes/root/theme.config.php b/themes/root/theme.config.php
index b168f023a36..e56f644e02b 100644
--- a/themes/root/theme.config.php
+++ b/themes/root/theme.config.php
@@ -18,6 +18,7 @@
             'VuFind\View\Helper\Root\Captcha' => 'VuFind\View\Helper\Root\CaptchaFactory',
             'VuFind\View\Helper\Root\Cart' => 'VuFind\View\Helper\Root\CartFactory',
             'VuFind\View\Helper\Root\Citation' => 'VuFind\View\Helper\Root\CitationFactory',
+            'VuFind\View\Helper\Root\CleanHtml' => 'VuFind\View\Helper\Root\CleanHtmlFactory',
             'VuFind\View\Helper\Root\Component' => 'Laminas\ServiceManager\Factory\InvokableFactory',
             'VuFind\View\Helper\Root\Config' => 'VuFind\View\Helper\Root\ConfigFactory',
             'VuFind\View\Helper\Root\Content' => 'VuFind\View\Helper\Root\ContentFactory',
@@ -31,6 +32,7 @@
             'VuFind\View\Helper\Root\DateTime' => 'VuFind\View\Helper\Root\DateTimeFactory',
             'VuFind\View\Helper\Root\DisplayLanguageOption' => 'VuFind\View\Helper\Root\DisplayLanguageOptionFactory',
             'VuFind\View\Helper\Root\Doi' => 'VuFind\View\Helper\Root\DoiFactory',
+            'VuFind\View\Helper\Root\EscapeOrCleanHtml' => 'VuFind\View\Helper\Root\EscapeOrCleanHtmlFactory',
             'VuFind\View\Helper\Root\ExplainElement' => 'Laminas\ServiceManager\Factory\InvokableFactory',
             'VuFind\View\Helper\Root\Export' => 'VuFind\View\Helper\Root\ExportFactory',
             'VuFind\View\Helper\Root\Feedback' => 'VuFind\View\Helper\Root\FeedbackFactory',
@@ -122,6 +124,7 @@
             'captcha' => 'VuFind\View\Helper\Root\Captcha',
             'cart' => 'VuFind\View\Helper\Root\Cart',
             'citation' => 'VuFind\View\Helper\Root\Citation',
+            'cleanHtml' => 'VuFind\View\Helper\Root\CleanHtml',
             'component' => 'VuFind\View\Helper\Root\Component',
             'config' => 'VuFind\View\Helper\Root\Config',
             'content' => 'VuFind\View\Helper\Root\Content',
@@ -135,6 +138,7 @@
             'dateTime' => 'VuFind\View\Helper\Root\DateTime',
             'displayLanguageOption' => 'VuFind\View\Helper\Root\DisplayLanguageOption',
             'doi' => 'VuFind\View\Helper\Root\Doi',
+            'escapeOrCleanHtml' => 'VuFind\View\Helper\Root\EscapeOrCleanHtml',
             'explainElement' => 'VuFind\View\Helper\Root\ExplainElement',
             'export' => 'VuFind\View\Helper\Root\Export',
             'feedback' => 'VuFind\View\Helper\Root\Feedback',