CVE-2026-8078

Fix stored XSS in global settings change log

State: Published
Severity: 4.8 Medium
Published: Jun 8, 2026
Updated: Jun 8, 2026
Reserved: May 7, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N	Checkmk

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
CheckmkCheckmk GmbH	2.5.0 to before 2.5.0p5Affected 2.4.0 to before 2.4.0p31Affected 2.3.0 to before 2.3.0p48Affected 2.2.0Affected

References

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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.