Foreign-report modification via missing permission check
Published Jul 31, 2026 · Updated Jul 31, 2026
Missing authorization in Checkmk enterprise editions allows remote authenticated users to modify reports owned by other users. The report-editing path accepts updates to a foreign report without enforcing the Edit foreign Reports permission. The flaw affects releases before 2.5.0p10, before 2.4.0p35, before 2.3.0p49, and the 2.2.0 EOL line; an authenticated account is required.
Summary
What happened
Missing authorization in Checkmk enterprise editions allows remote authenticated users to modify reports owned by other users. The report-editing path accepts updates to a foreign report without enforcing the Edit foreign Reports permission. The flaw affects releases before 2.5.0p10, before 2.4.0p35, before 2.3.0p49, and the 2.2.0 EOL line; an authenticated account is required.
The record
- CVE
- CVE-2026-15227
- Published
- Jul 31, 2026
- Updated
- Jul 31, 2026
- Vendor
- Checkmk GmbH
- Product
- Checkmk
- Classifications
- T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 31, 2026CVE publishedPublication date reported by the CVE source.
- Jul 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.2.0
- Affected versionversion=2.3.0 <2.3.0p49
- Affected versionversion=2.4.0 <2.4.0p35
- Affected versionversion=2.5.0 <2.5.0p10
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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