CVE-2026-54002
Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 CWE-87 |
| Vendor | getkirby |
| Product | kirby |
| Published | Jul 9, 2026 |
| Last Updated | Jul 9, 2026 |
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Affected Versions
getkirby / kirby
< 4.9.4 >= 5.0.0, < 5.4.4
References
github.com: https://github.com/getkirby/kirby/security/advisories/GHSA-wr9h-4r83-f4v6 github.com: https://github.com/getkirby/kirby/commit/0f0437b5128c910103cbc78fc34d94b2a3faef4c github.com: https://github.com/getkirby/kirby/commit/7ad76cf9c7387462828e6ebfc8404e31b37829e9 github.com: https://github.com/getkirby/kirby/commit/9ec1873864441dbc06479ef7823da348ec7f2700 github.com: https://github.com/getkirby/kirby/commit/bb2562e16c754493a403b8df84c9883108871e4c github.com: https://github.com/getkirby/kirby/releases/tag/4.9.4 github.com: https://github.com/getkirby/kirby/releases/tag/5.4.4