Cross-site scripting (XSS) vulnerability in public_html/lists/admin/ in phpList before 2.10.18 allows remote attackers to inject arbitrary web script or HTML via the num parameter in a reconcileusers action.
https://www.phplist.com/?lid=567
https://mantis.phplist.com/view.php?id=16557
http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5081.php
http://www.openwall.com/lists/oss-security/2012/06/17/2