CVE-2026-9549 — Fix XSS in service discovery active check output
Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can config…
Published: 2026-06-08 · CVSS: 4.8 · CVSS 4.0
Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7