CVE-2025-3469 is a cross-site scripting (XSS) vulnerability in MediaWiki affecting certain versions prior to 1.39.12, 1.42.6, and 1.43.1. It arises from improper neutralization of input during web page generation in the HTMLMultiSelectField.Php component. The vulnerability could allow an attacker to inject malicious scripts into web pages generated by MediaWiki.