CVE-2026-8078

MEDIUM

Checkmk - Fix Stored XSS in Global Settings Change Log

Title source: rule

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://checkmk.com/werk/17992

Scores

CVSS v3 4.8

EPSS 0.0014

EPSS Percentile 3.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

checkmk/checkmk 2.2.0 (50 CPE variants)

Published Jun 08, 2026

Tracked Since Jun 08, 2026