MediaWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2024-23172
An issue was discovered in the CheckUser extension in MediaWiki before 1.35.14 1.36.x through 1.39.x before 1.39.6 and 1.40.x before 1.40.2. XSS can occur via message definitions. e.g. in SpecialCheckUserLog.