VULNERABILITY INTELLIGENCE

CVE-2026-20915

CVSS score5.4 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-03-31
Last modified2026-07-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

Stored cross-site scripting (XSS) in Checkmk version 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create pending changes to inject malicious JavaScript into the Pending Changes sidebar, which will execute in the browsers of other users viewing the sidebar.

Weakness classification

  • security@checkmk.com: CWE-79

Primary references