CVE-2026-27151

LOW

2.7

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, the `move_posts` action only checked `can_move_posts?` on the source topic but never validated write permissions on the destination topic. This allowed TL4 users and category group moderators to move posts into topics in categories where they lack posting privileges (e.g., read-only categories or categories with group-restricted write access). Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Details CVE

Score CVSS v3.12.7

SeveriteLOW

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisHIGH

Interaction utilisateurNONE

Publie2/26/2026

Derniere modification3/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

discourse:discourse

Faiblesses (CWE)

CWE-862

References

https://github.com/discourse/discourse/security/advisories/GHSA-m69h-9m2g-cfgw(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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