CVE-2026-27935

MEDIUM6.9

Discourse leaks private topic metadata to non-authorized users

Published Mar 19, 2026

Modified 1 months ago

Details

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.

References

WEB

https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc

WEB

https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897

WEB

https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab

WEB

https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-27935

CVSS Analysis