CVE-2026-27935
MEDIUM severity · CVSS 6.5 · CWE-201
6.5CVSS MEDIUM
Summary
Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc ↗
Additional information
- NVD record
- https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fcPatch
- https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897Patch
- https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28babPatch
- https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76Advisory