CVE-2026-15227
Received Received - Intake

Missing Authorization in Checkmk Allows Report Modification

Publication date: 2026-07-31

Last updated on: 2026-07-31

Assigner: Checkmk GmbH

Description
Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.

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Meta Information

Published
2026-07-31
Last Modified
2026-07-31
Generated
2026-07-31
AI Q&A
2026-07-31
EPSS Evaluated
N/A
NVD
CVE-2026-15227
EUVD
EUVD-2026-51529

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
checkmk checkmk to 2.2.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability is a missing authorization issue in Checkmk versions before 2.5.0p10, 2.4.0p35, 2.3.0p49, and 2.2.0 (EOL). An authenticated user without the 'Edit foreign Reports' permission can modify reports owned by other users.

Detection Guidance

To detect this vulnerability, review Checkmk user permissions and report ownership. Check for users without the 'Edit foreign Reports' permission who can modify reports owned by others. Inspect audit logs for unauthorized report modifications.

Impact Analysis

An attacker with authenticated access could alter reports they do not own, potentially leading to data integrity issues, misinformation, or unauthorized changes to critical monitoring data.

Compliance Impact

This vulnerability could violate compliance requirements that mandate data integrity and access controls, such as GDPR's integrity principle or HIPAA's access controls for protected health information.

Mitigation Strategies

Upgrade Checkmk to version 2.5.0p10, 2.4.0p35, 2.3.0p49, or later. Ensure only authorized users have report modification permissions. Review and restrict 'Edit foreign Reports' access to trusted personnel.

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