MEDIUM
Cross-site scripting (XSS) vulnerability in Bugzilla 3.7.1, 3.7.2, 3.7.3, and 4.0rc1 allows remote attackers to inject arbitrary web script or HTML via the real name field of a user account, related to the AutoComplete widget in YUI.
http://www.bugzilla.org/security/3.2.9/
http://www.securityfocus.com/bid/45982
http://www.vupen.com/english/advisories/2011/0207
http://www.vupen.com/english/advisories/2011/0271
http://yuilibrary.com/forum/viewtopic.php?p=12923
http://yuilibrary.com/projects/yui2/ticket/2529228