CVE-2024-34502

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.

• CWE-352

• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359Patch, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/Mailing List, Third Party Advisory
• https://phabricator.wikimedia.org/T357101Issue Tracking, Vendor Advisory
• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359Patch, Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
• https://phabricator.wikimedia.org/T357101Issue Tracking, Vendor Advisory

Published

May 5, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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