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CVE-2026-9549

Fix XSS in service discovery active check output PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Checkmk GmbH / Checkmkaffected 2.5.0 before 2.5.0p5; affected 2.4.0 before 2.4.0p31; affected 2.3.0 before 2.3.0p48; affected 2.2.0

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.