CVE-2023-45362: Undefined Security Weakness

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...