Requesting a handle_token with org.freedesktop.portal.RemoteDesktop.CreateSession containing a special character causes the portal to crash

[Kale-Ko]

Operating System

Arch Linux

XDG Desktop Portal version

1.18

XDG Desktop Portal version (Other)

No response

Desktop Environment

KDE

Desktop Environment (Other)

No response

Expected Behavior

An error response is returned or the message is discarded.

Current Behavior

The portal crashes.

Steps to Reproduce

1. Run gdbus call --session --dest org.freedesktop.portal.Desktop --object-path /org/freedesktop/portal/desktop --method org.freedesktop.portal.RemoteDesktop.CreateSession '{"handle_token": <"token_with_special_&">, "session_handle_token": <"valid_token">}' in a terminal

Anything else we should know?

Core Dump: core.dump.tar.gz

If the arguments are reversed the portal seems to just discard the message as expected.