CVE-2026-33456
High
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.
SeverityHigh
CVSS7.6
Exploit probability—
ProductCheckmk
PublishedApr 10, 2026
First seenApr 10, 2026
Weakness typeCWE-140CWE-140
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| checkmk checkmk | 2.4.0, 2.5.0 | — |
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