Port Zero

**Name of the Vulnerable Software and Affected Versions** Checkmk versions prior to 2.2.0p15 Checkmk versions prior to 2.1.0p37 Checkmk versions prior to 2.0.0p40 **Description** The issue allows an authenticated attacker to delete user-messages for individual users due to a Cross-site Request Forgery (CSRF) flaw. **Recommendations** For versions prior to 2.2.0p15, update to version 2.2.0p15 or later. For versions prior to 2.1.0p37, update to version 2.1.0p37 or later. For versions prior to 2.0.0p40, update to version 2.0.0p40 or later.