CVE-2007-4544
Cross-site scripting (XSS) vulnerability in wp-newblog.php in WordPress multi-user (MU) 1.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the weblog_id parameter (Username field).
Date published : 2007-08-27
http://www.securityfocus.com/archive/1/482006/100/0/threaded