Vulnerability Description
Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize(), Sane::sanitize(), Sane::Html::sanitize(), Sane::Svg::sanitize(), Sane::Xml::sanitize(), Sane::sanitizeFile(), or file sanitizeContents() with untrusted input allow malicious markup injected as children of an unknown HTML or XML tag to pass through Dom::sanitize() without being correctly sanitized, causing stored cross-site scripting. This issue is fixed in versions 4.9.4 and 5.4.4.
Related Weaknesses (CWE)
References
- https://github.com/getkirby/kirby/commit/0f0437b5128c910103cbc78fc34d94b2a3faef4
- https://github.com/getkirby/kirby/commit/7ad76cf9c7387462828e6ebfc8404e31b37829e
- https://github.com/getkirby/kirby/commit/9ec1873864441dbc06479ef7823da348ec7f270
- https://github.com/getkirby/kirby/commit/bb2562e16c754493a403b8df84c9883108871e4
- https://github.com/getkirby/kirby/releases/tag/4.9.4
- https://github.com/getkirby/kirby/releases/tag/5.4.4
- https://github.com/getkirby/kirby/security/advisories/GHSA-wr9h-4r83-f4v6
FAQ
What is CVE-2026-54002?
CVE-2026-54002 is a documented vulnerability. Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize(), Sane::sanitize(), Sane::Html::sanitize(...
How severe is CVE-2026-54002?
CVSS scoring is not yet available for CVE-2026-54002. Check NVD for updates.
Is there a patch for CVE-2026-54002?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.