PHP FormMail Generator generates PHP code for standard web forms, and the code generated is vulnerable to unsafe deserialization of untrusted data

The PHP form code generated by PHP FormMail Generator deserializes untrusted input as part of the phpfmg_filman_download() function. A remote unauthenticated attacker may be able to use this vulnerability to inject PHP code, or along with CVE-2016-9484 to perform local file inclusion attacks and obtain files from the server.