CVE-2020-26120: Fedoraproject Fedora

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

XSS exists in the MobileFrontend extension for MediaWiki before 1.34.4 because section.line is mishandled during regex section line replacement from PageGateway. Using crafted HTML, an attacker can elicit an XSS attack via jQuery's parseHTML method, which can cause image callbacks to fire even without the element being appended to the DOM.

Affected products

• Fedoraproject Fedora: version 33 only
• Mediawiki Mediawiki: before 1.34.4 (fixed in 1.34.4)

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