CVE-2026-8078: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Checkmk GmbH Checkmk
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.
CVE-2026-8078: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Checkmk GmbH Checkmk
Description
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.
CVSS v4.0
Score 4.8medium
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Checkmk
- Date Reserved
- 2026-05-07T11:16:47.854Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a26bda8e29bf47b50e66003
Added to database: 6/8/2026, 1:03:36 PM
Last updated: 6/8/2026, 1:04:07 PM
Views: 1
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