CVE-2026-33456

Potential livestatus injection in notification test

Published Apr 10, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
CPEs cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:b6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p10:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p11:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p12:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p13:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p14:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p15:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p16:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p17:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p18:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p19:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p20:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p21:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p22:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p23:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p24:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p25:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p7:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p8:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.4.0:p9:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Potential livestatus injection in notification test
First Time appeared Checkmk
Checkmk checkmk
Weaknesses CWE-140
CPEs cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
Vendors & Products Checkmk
Checkmk checkmk
References
Metrics cvssV4_0

{'score': 5.1, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Checkmk
Published
Updated
Apr 14, 2026, 1:29 PM
Reserved
Mar 20, 2026, 10:30 AM
Status
Analyzed
Published
Apr 10, 2026, 9:16 AM
Modified
Oct 23, 2026, 11:10 PM