Description
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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-9c7p-fqc5-c24f
Scores
CVSS v3
2.7
EPSS
0.0005
EPSS Percentile
15.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (2)
discourse/discourse
2026.2.0
discourse/discourse
< 2025.12.0
Published
Feb 26, 2026
Tracked Since
Feb 27, 2026