CVE-2024-34502 Information

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.

Reference

https://phabricator.wikimedia.org/T357101 https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359