Information disclosure in Discourse

CVE-2026-30891

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a user could access another user's private activity due to insufficient authorization checks in the user actions endpoint. Versio…

Vulnerability class: Information Disclosure

EPSS: 0.001 (19.6th 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-200 — Information Disclosure

References

https://github.com/discourse/discourse/security/advisories/GHSA-ww5f-24g5-c33g (x_refsource_CONFIRM)