CVE-2026-33457: Checkmk

Medium severity, CVSS 6.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Livestatus injection in the prediction graph page in Checkmk <2.5.0b4, <2.4.0p26, and <2.3.0p47 allows an authenticated user to inject arbitrary Livestatus commands via a crafted service name parameter due to insufficient sanitization of the service description value.

Affected products

• Checkmk Checkmk: version 2.3.0 only; version 2.4.0 only; version 2.5.0 only

Published 2026-04-10. Last modified 2026-06-17.