Cross-site scripting (XSS) vulnerability in MediaWiki before 1.4.5 allows remote attackers to inject arbitrary web script via HTML attributes in page templates.
http://www.securityfocus.com/bid/13861
http://www.novell.com/linux/security/advisories/2005_19_sr.html
http://sourceforge.net/project/shownotes.php?release_id=332231