PT-2026-31899 · Checkmk Gmbh · Checkmk

Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-33456

NVD

CVSS v4.0

5.1

Medium

AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Weakness Enumeration

CWE-140

Related Identifiers

CVE-2026-33456

Affected Products

Checkmk

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33456 · Security Note
• https://checkmk.com/werk/17989 · Vendor Advisory
• https://twitter.com/CVEnew/status/2042561715163009475 · Twitter Post