CVE-2024-38865: Checkmk

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

Improper neutralization of livestatus command delimiters in a specific endpoint within RestAPI of Checkmk prior to 2.2.0p39, 2.3.0p25, and 2.1.0p51 (EOL) allows arbitrary livestatus command execution. Exploitation requires the attacker to have a contact group assigned to their user account and for an event to originate from a host with the same contact group or from an event generated with an unknown host.

Affected products

• Checkmk Checkmk: before 2.1.0 (fixed in 2.1.0); version 2.1.0 only; version 2.2.0 only; version 2.3.0 only

Published 2025-04-10. Last modified 2026-06-17.