CVE-2026-3103: Checkmk

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A logic error in the remove_password() function in Checkmk GmbH's Checkmk versions <2.4.0p23, <2.3.0p43, and 2.2.0 (EOL) allows a low-privileged user to cause data loss.

Affected products

• Checkmk Checkmk: version 2.2.0 only; version 2.3.0 only; version 2.4.0 only

Published 2026-03-04. Last modified 2026-06-17.