Auth bypass in Discourse

CVE-2026-30889

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a moderator could exploit insufficient authorization checks to access metadata of posts they should not have permission to view…

Vulnerability class: Broken Access Control

EPSS: 0.000 (5.4th 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.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

https://github.com/discourse/discourse/security/advisories/GHSA-5qm9-r98f-g4mq (x_refsource_CONFIRM)