CVE-2024-34502

9.8 CRITICAL
Published: May 05, 2024 Modified: November 04, 2025
View on NVD

Description

An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. Loading Special:MergeLexemes will (attempt to) make an edit that merges the from-id to the to-id, even if the request was not a POST request, and even if it does not contain an edit token.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359
Source: cve@mitre.org
Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
Source: cve@mitre.org
Mailing List Third Party Advisory
https://phabricator.wikimedia.org/T357101
Source: cve@mitre.org
Issue Tracking Vendor Advisory
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
Source: af854a3a-2127-422b-91ae-364da2661108
https://phabricator.wikimedia.org/T357101
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Vendor Advisory

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.2%
37th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-352

Affected Vendors

mediawiki fedoraproject

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