Description (CNA)
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass in the poll plugin allowed authenticated users to vote on, remove votes from, or toggle the open/closed status of polls they did not have access to. By passing post_id as an array (e.g. post_id[]=&post_id[]=), the authorization check resolves to the accessible post while the poll lookup resolves to a different post's poll. This affects the vote, remove_vote, and toggle_status endpoints in DiscoursePoll::PollsController. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| discourse / discourse | affected >= 2026.1.0-latest, < 2026.1.2; affected >= 2026.2.0-latest, < 2026.2.1; affected = 2026.3.0-latest.1 |
CWE
CWE-863, CWE-20
References
- https://github.com/discourse/discourse/security/advisories/GHSA-fgxm-prjv-g823
- https://github.com/discourse/discourse/commit/1a6b3cdd8939053f485a60a6ea004a40878392c4
ADP enrichment
No English description supplied.
No references supplied.