CVE-2026-26979CWE-862

Discourse: TL4 users are able to change status of restricted topics

published February 26, 2026

CVSS v4.0
0.0
EPSS
0%
Percentile
21.4
In the wild
Unconfirmed
What it is

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, TL4 users are able to close, archive and pin topics in private categories they don't have access to. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

The record
Technical detail
CVSS v4.0
0.0 · NONE
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00299 · 21.4th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-02-26T19:25Z
EPSS history
Timeline
  • 26 FEB 19:25Z
    Discourse: TL4 users are able to change status of restricted topics
    cvelistv5