Insufficient Permissions in Checkmk REST API Affects User Privileges
CVE-2026-24096

5.3MEDIUM

Key Information:

Vendor

Checkmk Gmbh

Status
Checkmk
Vendor
CVE Published:
1 April 2026

What is CVE-2026-24096?

The vulnerability in Checkmk's REST API arises from a lack of proper permission validation in multiple Quick Setup endpoints. This flaw allows low-privileged users to execute unauthorized actions or access sensitive information, potentially compromising system security. Versions affected include Checkmk 2.5.0 (beta) before 2.5.0b2 and 2.4.0 before 2.4.0p25, highlighting the need for immediate remediation to safeguard against unauthorized data exposure.

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Deploy the Patch

Affected Version(s)

Checkmk 2.5.0b1 < 2.5.0b2

Checkmk 2.4.0 < 2.4.0p25

References

https://checkmk.com/werk/18989

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

PS Positive Security GmbH
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