CVE-2021-44856 Information

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Description

An issue was discovered in MediaWiki before 1.35.5 1.36.x before 1.36.3 and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value.

Reference

https://phabricator.wikimedia.org/T271037