CVE-2013-6455: Mediawiki

Medium severity, CVSS 5.3. EPSS: 1.1% chance of exploitation in the next 30 days.

The CentralAuth extension for MediaWiki before 1.19.10, 1.2x before 1.21.4, and 1.22.x before 1.22.1 allows remote attackers to obtain usernames via vectors related to writing the names to the DOM of a page.

Affected products

• Mediawiki Mediawiki: before 1.19.10 (fixed in 1.19.10); from 1.20.0, before 1.21.4 (fixed in 1.21.4); from 1.22.0, before 1.22.1 (fixed in 1.22.1)

Published 2020-01-28. Last modified 2026-06-17.