Cross-site scripting (XSS) vulnerability in Nucleus before 3.24 allows remote attackers to inject arbitrary web script or HTML via unknown vectors, possibly involving (1) lib/ADMIN.php and (2) lib/SKIN.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30254
http://www.vupen.com/english/advisories/2006/4495
http://www.securityfocus.com/bid/21104
http://www.nucleuscms.org/item/3044
http://securitytracker.com/id?1017220