cvedb.io
CVE-2026-8833
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-06-08T13:16:33.900 · Last modified 2026-06-17T11:04:30.023

Summary

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another user interacts with the crafted link.

Affected products

checkmk — checkmk

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.