PT-2026-29318 · Discourse · Discourse

Davidtaylorhq · Published 2026-03-31 · Updated 2026-04-07 · CVE-2026-33300

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Discourse versions 2026.1.0 through 2026.1.2, 2026.2.0 through 2026.2.1, and 2026.3.0 through 2026.3.0

Description A flaw exists in the Category Chatables Controller 'show' action that allows moderators to bypass authorization restrictions and access information about hidden group names and user counts.

Recommendations Update to Discourse version 2026.1.3 or later. Update to Discourse version 2026.2.2 or later. Update to Discourse version 2026.3.0 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BIT-DISCOURSE-2026-33300

CVE-2026-33300

GHSA-WRWM-VQX2-6X4V

Affected Products

Discourse

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33300.json · Exploit
• https://github.com/discourse/discourse/commit/07f66658cce81a099a0d7115db5f3c69f5d3cca2 · Patch
• https://github.com/discourse/discourse/security/advisories/GHSA-wrwm-vqx2-6x4v · Vendor Advisory
• https://osv.dev/vulnerability/BIT-discourse-2026-33300 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33300 · Security Note
• https://osv.dev/vulnerability/CVE-2026-33300 · Vendor Advisory