phpegasus is prone to a vulnerability that lets attackers upload arbitrary files because the application fails to adequately sanitize user-supplied input.

An attacker can exploit this vulnerability to upload arbitrary code and run it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible.

all version is Affected with this vulnerability
The following exploit code is available here:

http://www.inj3ct0r.com/exploits/11985