Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitees, and attendance statistics to users who could view the topic but were not entitled to view the private event invitee list. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
discourse discourse
>= 2026.1.0-latest, < 2026.1.5affected>= 2026.4.0-latest, < 2026.4.2affected>= 2026.5.0-latest, < 2026.5.1affected
References
- https://github.com/discourse/discourse/security/advisories/GHSA-22v7-6wgj-g9f7 ↗
- https://github.com/discourse/discourse/commit/37969503f20369eb1712b7b88daedcfb4f63f5f1 ↗
- https://github.com/discourse/discourse/commit/4d46638041b5f3d1e1f7f6f6f19c1df3bd65a586 ↗
- https://github.com/discourse/discourse/commit/6457ab71f36a2d1440fe96af0a2593897844b023 ↗
- https://github.com/discourse/discourse/commit/7deb4b6963442569357b41e61febe37594e5e730 ↗
- https://github.com/discourse/discourse/releases/tag/v2026.1.5 ↗
- https://github.com/discourse/discourse/releases/tag/v2026.4.2 ↗
- https://github.com/discourse/discourse/releases/tag/v2026.5.1 ↗
- https://github.com/discourse/discourse/releases/tag/v2026.6.0 ↗