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{"timestamp":"2026-08-17T14:50:55.419627Z","id":"CVE-2026-16045","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 Mattermost failed to restrict OAuth deauthorization and personal access token management endpoints to direct user sessions, which allowed an OAuth app with a delegated user token to revoke the user's authorizations or tokens for other integrations via account-management endpoints.. Mattermost Advisory ID: MMSA-2026-00704

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE-863

https://mattermost.com/security-updates

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