CVE-2023-6156: Checkmk

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper neutralization of livestatus command delimiters in the availability timeline in Checkmk <= 2.0.0p39, < 2.1.0p37, and < 2.2.0p15 allows arbitrary livestatus command execution for authorized users.

Affected products

• Checkmk Checkmk: version 2.0.0 only; version 2.1.0 only; version 2.2.0 only

Published 2023-11-22. Last modified 2026-06-17.