Detections
Analytics
CVE-2026-45780
medium
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.
References
https://github.com/discourse/discourse/security/advisories/GHSA-22v7-6wgj-g9f7
https://github.com/discourse/discourse/releases/tag/v2026.6.0
https://github.com/discourse/discourse/releases/tag/v2026.5.1
https://github.com/discourse/discourse/releases/tag/v2026.4.2
https://github.com/discourse/discourse/releases/tag/v2026.1.5
https://github.com/discourse/discourse/commit/7deb4b6963442569357b41e61febe37594e5e730
https://github.com/discourse/discourse/commit/6457ab71f36a2d1440fe96af0a2593897844b023
https://github.com/discourse/discourse/commit/4d46638041b5f3d1e1f7f6f6f19c1df3bd65a586
https://github.com/discourse/discourse/commit/37969503f20369eb1712b7b88daedcfb4f63f5f1