An issue was discovered in DifferenceEngine.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. diff-multi-sameuser (aka "X intermediate revisions by the same user not shown") ignores username suppression. This is an information leak.
{ "cpes": [ "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*", "cpe:2.3:a:mediawiki:mediawiki:1.40.0:-:*:*:*:*:*:*", "cpe:2.3:a:mediawiki:mediawiki:1.40.0:rc0:*:*:*:*:*:*" ], "severity": "Medium" }