CVE-2026-33456 PUBLISHED

Potential livestatus injection in notification test

Assigner: Checkmk
Reserved: 20.03.2026 Published: 10.04.2026 Updated: 10.04.2026

Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Checkmk GmbH
Product	Checkmk
Versions	Default: unaffected affected from 2.5.0 to 2.5.0b4 (excl.) affected from 2.4.0 to 2.4.0p26 (excl.)

References

https://checkmk.com/werk/17989

Problem Types

CWE-140: Improper Neutralization of Delimiters CWE

Impacts

CAPEC-15: Command Delimiters