Security announcements | Moodle.org

The referrer URL used by MFA required additional sanitizing, rather than being used directly.

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Additional sanitizing was required when opening the equation editor, to prevent a stored XSS risk when editing another user's equation.

Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.

Insufficient checks in a web service made it possible to add comments to the comments block on another user's dashboard when it was not otherwise available (eg on their profile page).

The link to update all installed language packs did not include the necessary token to prevent a CSRF risk.

Separate Groups mode restrictions were not honoured when performing a forum export, which would export forum data for all groups. By default this only provided additional access to non-editing teachers.

Separate Groups mode restrictions were not honoured in the H5P attempts report, which would display users from other groups. By default this only provided additional access to non-editing teachers.

The URL parameters accepted by forum search were not limited to the allowed parameters.

Insufficient file size checks resulted in a denial of service risk in the file picker's unzip functionality.