CVE-2013-6455

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-01-28 · updated 2026-06-17
Weakness: CWE-200

Description

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

Wikimedia Foundation MediaWiki: before 1.19.10; from 1.20.0 before 1.21.4; from 1.22.0 before 1.22.1 — fixed in 1.19.10, 1.21.4, 1.22.1

How to fix

Upgrade to a fixed version: Wikimedia Foundation MediaWiki 1.19.10, 1.21.4, 1.22.1. Check the vendor advisory for mitigations.

References

http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-January/000138.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-January/000138.html

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