CVE-2026-85390

Checkmate through 3.11.0 omits the isAllowed role guard middleware on its maintenance-window, notification, and check-deletion routes, allowing users with a read-only role to perform administrative actions. A low-privileged attacker with a valid user-role session can create arbitrary maintenance ...

EUVD-2026-70667

Checkmate through 3.11.0 omits the isAllowed role guard middleware on maintenance-window, notification, and check-deletion routes, allowing read-only users to perform administrative actions. Attackers with user-role sessions can create arbitrary maintenance windows to silence alerts, modify...