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Mattermost fails to properly enforce read permissions in search API endpoints

🗓️ 16 Mar 2026 15:30:47Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 6 Views

Mattermost search API fails to enforce read permissions for certain versions, enabling guests to access channel posts and files.

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18 Mar 2026 16:08Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00165
SSVC
6