Cross-site scripting (XSS) vulnerability in PostNuke 0.71 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) name parameter in modules.php and (2) catid parameter in index.php.
http://www.securityfocus.com/bid/4350
http://www.iss.net/security_center/static/8605.php
http://sourceforge.net/tracker/index.php?func=detail&aid=524777&group_id=27927&atid=392228
http://archives.neohapsis.com/archives/bugtraq/2002-03/0299.html