PT-2026-29318 · Discourse · Discourse

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-33300

Mitre

CVSS v4.0

5.3

Medium

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden groups names and user count. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-33300

Affected Products

Discourse

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33300 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-wrwm-vqx2-6x4v · Note
• https://github.com/discourse/discourse/commit/07f66658cce81a099a0d7115db5f3c69f5d3cca2 · Note