Vulnerability in Discourse

CVE-2026-27935

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 modera…

EPSS: 0.001 (16.1th percentile) — read the EPSS interpretation.

Affected products

Discourse — versions >= 2026.1.0-latest, < 2026.1.2, >= 2026.2.0-latest, < 2026.2.1, = 2026.3.0-latest

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76 (x_refsource_CONFIRM)
https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc (x_refsource_MISC)
https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897 (x_refsource_MISC)
https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab (x_refsource_MISC)