CVE-2026-33291CWE-863

Discourse user can create Zendesk tickets even when it does not have access to topic

Medium · published March 20, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
16.3
In the wild
Unconfirmed
What it is

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, moderators can create Zendesk tickets for topics they do not have access to view. This affects all forums that use the Zendesk plugin. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00256 · 16.3th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-03-20T22:56Z
EPSS history
Timeline
  • 20 MAR 22:56Z
    Discourse user can create Zendesk tickets even when it does not have access to topic
    cvelistv5