CVE-2026-16045

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.7.0 through 11.7.6 Mattermost versions 10.11.0 through 10.11.21

Description Failure to restrict OAuth deauthorization and personal access token management endpoints to direct user sessions allows an OAuth application possessing a delegated user token to revoke the user's authorizations or tokens for other integrations through account-management endpoints.

Recommendations Update Mattermost versions 11.7.0 through 11.7.6 to a version newer than 11.7.6. Update Mattermost versions 10.11.0 through 10.11.21 to a version newer than 10.11.21.