Medium severity · published Jul 31, 2026
CVE-2026-15227
Missing Authorization Allows Editing of Foreign Reports
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
Checkmk · Checkmk GmbH
2.5.0 before 2.5.0p10; 2.4.0 before 2.4.0p35; 2.3.0 before 2.3.0p49; 2.2.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15227
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15227
checkmk.com
https://checkmk.com/werk/20003
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