XSS in The Wikimedia Foundation MediaWiki - Score Extension
CVE-2026-39936
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Score Extension allows Cross-Site Scripting (XSS). The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (19.0th percentile) — read the EPSS interpretation.
Affected products
- The Wikimedia Foundation Mediawiki - Score Extension — versions 1.43, 1.44, 1.45