CVE-2005-4501: Mediawiki

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

MediaWiki before 1.5.4 uses a hard-coded "internal placeholder string", which allows remote attackers to bypass protection against cross-site scripting (XSS) attacks and execute Javascript using inline style attributes, which are processed by Internet Explorer.

Affected products

• Mediawiki Mediawiki: up to and including 1.5.3; version 1.1.0 only; version 1.2.0 only; version 1.2.1 only; version 1.2.2 only; version 1.2.3 only; …

Published 2005-12-22. Last modified 2026-06-16.