Description
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authenticated moderator-level user could retrieve post content, topic titles, and usernames from categories they were not authorized to view. Insufficient access controls on a sentiment analytics endpoint allowed category permission boundaries to be bypassed. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
Problem types
CWE-284: Improper Access Control
Product status
>= 2026.2.0-latest, < 2026.2.2
>= 2026.3.0-latest, < 2026.3.0
References
github.com/...course/security/advisories/GHSA-vj5f-gg8m-93xg
github.com/...ommit/e1bb146a1fadc863a516fbc26c6277273a025308