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VulnerabilityPublished Updated

CVE-2024-34500: Unlinked wikibase · MediaWiki UnlinkedWikibase Cross-site Scripting vulnerability

Affects samwilson/unlinked-wikibaseSource GCVE Database

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Authoritative record:CVE-2024-34500· Medium 6.1

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

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.16.1
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 May 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Packagistsamwilson/unlinked-wikibaseAffected
  • <1.42.0
Fixed in
  • 1.42.0

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

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