CVE-2026-56774: Kanboard

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Kanboard through 1.2.52, fixed in commit 928c68a, UserViewController::removeSession fails to validate the session id parameter before passing it to RememberMeSessionModel::remove, allowing authenticated users to delete other users' Remember Me sessions. Attackers can enumerate sequential session IDs and mass-invalidate persistent login sessions of any user, including administrators, forcing re-authentication and causing denial of service.

Affected products

• Kanboard Kanboard: up to and including 1.2.52

Published 2026-06-25. Last modified 2026-07-14.