HIGHCVE-2026-20915Published Modified CNA Checkmk
CVE-2026-20915: Stored cross-site scripting in Pending Changes sidebar
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.
Metrics
- CVSS v4.0
- 8.5
- Severity
- HIGH
- Fixed in
- 2.5.0b2
- Affected Products
- 1
Fix available
2.5.0b2
Affected packages
- Checkmk GmbH / Checkmk< 2.5.0b2 (from 2.5.0b1)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:NReferences