CVE-2019-16529
An issue was discovered in the CheckUser extension through 1.35.0 for MediaWiki. Oversighted edit summaries are still visible in CheckUser results in violation of MediaWiki’s permissions model.
Date published : 2020-03-19
https://phabricator.wikimedia.org/rECHU22ddd638ba79903361df88c755232a532cbdbfb3