PT-2026-26704 · Discourse · Discourse+1

Jomaxr · Published 2026-03-20 · Updated 2026-03-27 · CVE-2026-33291

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2

Description Discourse is an open-source discussion platform. Moderators can create Zendesk tickets for topics they do not have access to view in versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. This impacts all forums utilizing the Zendesk plugin.

Recommendations Update to Discourse version 2026.3.0-latest.1. Update to Discourse version 2026.2.1. Update to Discourse version 2026.1.2.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

BIT-DISCOURSE-2026-33291

CVE-2026-33291

GHSA-P26H-JQR4-R6J7

Affected Products

Discourse

Zendesk Plugin

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33291.json · Exploit
• https://github.com/discourse/discourse/security/advisories/GHSA-p26h-jqr4-r6j7 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-33291 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33291 · Security Note
• https://osv.dev/vulnerability/BIT-discourse-2026-33291 · Vendor Advisory
• https://twitter.com/CVEnew/status/2035262121005535350 · Twitter Post