Unrestricted file upload vulnerability in Uber Uploader 4.2 allows remote attackers to upload and execute arbitrary PHP scripts by naming them with a .phtml extension, which bypasses the .php extension check but is still executable on some server configurations.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31303
http://www.securityfocus.com/archive/1/456045/100/0/threaded