MediaWiki UnlinkedWikibase Cross-site Scripting vulnerability
An issue was discovered in the UnlinkedWikibase extension in MediaWiki before 1.42.0. XSS can occur through an interface message. Error messages (in the $err var) are not escaped before being passed to Html::rawElement() in the getError() function in the Hooks class.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | samwilson/unlinked-wikibase | < 1.42.0 | 1.42.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-34500
- https://github.com/github/advisory-database/pull/5310
- https://gerrit.wikimedia.org/r/c/mediawiki/extensions/UnlinkedWikibase/+/1002175
- https://gerrit.wikimedia.org/r/mediawiki/extensions/UnlinkedWikibase.git
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY
- https://phabricator.wikimedia.org/T357203
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
samwilson/unlinked-wikibase- Disclosed
- 05.05.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-wcx3-63mm-h8x6 - CC BY 4.0
Vulnerability history: samwilson/unlinked-wikibase
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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