Mara CMS 7.5 allows cross-site scripting (XSS) in contact.php via the theme or pagetheme parameters.
https://www.exploit-db.com/exploits/48777
https://github.com/FreySolarEye/CVE/blob/master/Mara%20CMS%207.5%20-%20Cross%20Site%20Scripting
http://packetstormsecurity.com/files/158728/Mara-CMS-7.5-Cross-Site-Scripting.html