The MsUpload extension for MediaWiki is vulnerable to stored XSS via the msu-continue system message, which is inserted into the DOM without proper sanitization. The vulnerability occurs in the file upload UI when the same filename is uploaded twice.
This issue affects Mediawiki - MsUpload 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-2025-7362
Vendor: Wikimedia Foundation
Product: Mediawiki - MsUpload extension
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 6.3% (scored less or equal to compared to others)
EPSS Date: 2025-07-10 (when was this score calculated)