CVE-2026-33456

HIGH

Potential livestatus injection in notification test

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
https://checkmk.com/werk/17989

Scores

CVSS v3 7.6
EPSS 0.0005
EPSS Percentile 14.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-140
Status published
Products (4)
checkmk/checkmk 2.4.0 (32 CPE variants)
checkmk/checkmk 2.5.0 b1 (3 CPE variants)
Checkmk GmbH/Checkmk 2.4.0 - 2.4.0p26
Checkmk GmbH/Checkmk 2.5.0 - 2.5.0b4
Published Apr 10, 2026
Tracked Since Apr 10, 2026