CVE-2022-24866: Discourse Assign

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Discourse Assign is a plugin for assigning users to a topic in Discourse, an open-source messaging platform. Prior to version 1.0.1, the UserBookmarkSerializer serialized the whole User / Group object, which leaked some private information. The data was only being serialized to people who could view assignment info, which is limited to staff by default. For the vast majority of sites, this data was only leaked to trusted staff member, but for sites with assign features enabled publicly, the data was accessible to more people than just staff. Version 1.0.1 contains a patch. There are currently no known workarounds.

Affected products

• Discourse Assign: before 1.0.1 (fixed in 1.0.1)

Published 2022-04-26. Last modified 2026-06-17.