CVE-2026-24096: Insufficient permission validation on multiple REST API Quick Setup endpoints

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-01 · updated 2026-06-17
Weakness: CWE-280

Description

Insufficient permission validation on multiple REST API Quick Setup endpoints in Checkmk 2.5.0 (beta) before version 2.5.0b2 and 2.4.0 before version 2.4.0p25 allows low-privileged users to perform unauthorized actions or obtain sensitive information

Affected products

Checkmk GmbH Checkmk: 2.4.0, 2.4.0-b1, 2.4.0-b2, 2.4.0-b3, 2.4.0-b4, 2.4.0-b5 (+26)

References

https://checkmk.com/werk/18989

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