Vulnerability Details CVE-2026-8078
Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.
Exploit prediction scoring system (EPSS) score
CVSS Severity
CVSS v3 Score 4.8
References
Products affected by CVE-2026-8078
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cpe:2.3:a:checkmk:checkmk:2.2.0
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cpe:2.3:a:checkmk:checkmk:2.3.0
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cpe:2.3:a:checkmk:checkmk:2.4.0
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cpe:2.3:a:checkmk:checkmk:2.5.0