CVE-2026-7186: Checkmk

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.

Affected products

• Checkmk Checkmk: version 2.2.0 only; version 2.3.0 only; version 2.4.0 only; version 2.5.0 only

Published 2026-06-08. Last modified 2026-10-06.