The TitleIcon extension for MediaWiki is vulnerable to stored XSS through the #titleicon_unicode parser function. User input passed to this function is wrapped in an HtmlArmor object without sanitization and rendered directly into the page header, allowing attackers to inject arbitrary JavaScript.
This issue affects Mediawiki - TitleIcon extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
CVE ID: CVE-2025-7363
Vendor: Wikimedia Foundation
Product: Mediawiki - TitleIcon extension
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 5.44% (scored less or equal to compared to others)
EPSS Date: 2025-07-10 (when was this score calculated)