CVE-2022-34911: Fedoraproject Fedora

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in MediaWiki before 1.35.7, 1.36.x and 1.37.x before 1.37.3, and 1.38.x before 1.38.1. XSS can occur in configurations that allow a JavaScript payload in a username. After account creation, when it sets the page title to "Welcome" followed by the username, the username is not escaped: SpecialCreateAccount::successfulAction() calls ::showSuccessPage() with a message as second parameter, and OutputPage::setPageTitle() uses text().

Affected products

• Fedoraproject Fedora: version 36 only; version 37 only
• Mediawiki Mediawiki: before 1.35.7 (fixed in 1.35.7); from 1.36.0, before 1.37.3 (fixed in 1.37.3); version 1.38.0 only

Published 2022-07-02. Last modified 2026-06-17.