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Mattermost doesn't properly validate CSRF tokens

🗓️ 25 Mar 2026 18:31:53Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 8 Views

Mattermost fails CSRF token validation on the activate policy endpoint, enabling admins to change policy status via crafted requests.

Related
Detection
Refs
Vulners
Node
mattermostmattermostRange8.0.0-20260105080200-d27a2195068d8.0.0-20260217110922-b7d4a1f1f59bgo
OR
mattermostmattermostRange10.11.0-rc110.11.1go
OR
mattermostmattermostRange11.2.0-rc111.2.3go
OR
mattermostmattermostRange11.3.0-rc111.3.2go
OR
mattermostmattermostRange11.4.0-rc111.4.1go

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31 Mar 2026 23:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.14.6
EPSS0.00123
SSVC
8