CVE-2026-33456

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.

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CVSS v3.1

7.6 HIGH

EPSS

0.20%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityLOW

IntegrityLOW

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Connections

2 relationships

CWE-140

source

Timeline

disclosure → media coverage

Apr 10, 2026

Disclosure — published as a CVE record. · last revised by NVD Apr 20, 2026