CentOS-WebPanel.com (aka CWP) CentOS Web Panel through 0.9.8.740 allows XSS via the admin/index.php module parameter.
https://www.exploit-db.com/exploits/45822/
http://packetstormsecurity.com/files/150169/CentOS-Web-Panel-0.9.8.740-XSS-CSRF-Code-Execution.html