🛡️ CVE-2024-34500 — fedora

🟡 CVSS 6.1 — Medium ✅ No Known Exploit CWE-79 NVD
6.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2024-34500 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2024-34500 is recorded against 3 packages.

  • fedora
  • mediawiki
  • samwilson/unlinked-wikibase (fixed in 1.42.0)

Timeline and source

Published on 5 May 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

gerrit.wikimedia.org
lists.fedoraproject.org
phabricator.wikimedia.org
gerrit.wikimedia.org
lists.fedoraproject.org
lists.fedoraproject.org
phabricator.wikimedia.org

Details

Severity MEDIUM
CVSS Score 6.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE CWE-79
Public Exploit ✅ No
Source NVD
Published 2024-05-05
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
fedora
mediawiki
samwilson/unlinked-wikibase 1.42.0

Similar Threats

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