Fix stored XSS in global settings change log
CVE-2026-8078

4.8MEDIUM

Key Information:

Vendor

Checkmk Gmbh

Status
Checkmk
Vendor
CVE Published:
8 June 2026

What is 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.

Affected Version(s)

Checkmk 2.5.0 < 2.5.0p5

Checkmk 2.4.0 < 2.4.0p31

Checkmk 2.3.0 < 2.3.0p48

References

https://checkmk.com/werk/17992
vendor-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.