CVE-2025-27538: Missing Authentication for Critical Function

Mattermost versions 10.5.x = 10.5.1, 9.11.x = 9.11.9 fail to enforce MFA checks in PUT /api/v4/users/user-id/mfa when the requesting user differs from the target user ID, which allows users with editotherusers permission to activate or deactivate MFA for other users, even if those users have not...