CVE-2020-25814: Fedoraproject Fedora

Medium severity, CVSS 6.1. EPSS: 1.4% chance of exploitation in the next 30 days.

In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.

Affected products

• Fedoraproject Fedora: version 33 only
• Mediawiki Mediawiki: before 1.31.10 (fixed in 1.31.10); from 1.32.0, before 1.34.4 (fixed in 1.34.4)

Published 2020-09-27. Last modified 2026-06-17.