CVE-2024-34500: Unlinked wikibase · MediaWiki UnlinkedWikibase Cross-site Scripting vulnerability
Affects samwilson/unlinked-wikibaseSource GCVE Database
Not known to be exploited · CVSS 6.1 Medium : upgrade to 1.42.0 when convenient.
Data as of 3 Nov 2026, 17:14 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 6.1 |
|---|
- Patch
- Available – fixed in 1.42.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 5 May 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade samwilson/unlinked-wikibase to 1.42.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Packagistsamwilson/unlinked-wikibase | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
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.
References
- nvd.nist.gov/vuln/detail/CVE-2024-34500 (opens in a new tab)
- github.com/github/advisory-database/pull/5310 (opens in a new tab)
- gerrit.wikimedia.org/r/c/mediawiki/extensions/UnlinkedWikibase/+/1002175 (opens in a new tab)
- gerrit.wikimedia.org/r/mediawiki/extensions/UnlinkedWikibase.git (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY (opens in a new tab)
- phabricator.wikimedia.org/T357203 (opens in a new tab)