A SSRF vulnerability exists in Winmail 6.5 in app.php in the key parameter when HTTPS is on. An attacker can use this vulnerability to caus…

A SSRF vulnerability exists in Winmail 6.5 in app.php in the key parameter when HTTPS is on. An attacker can use this vulnerability to cause the server to send a request to a specific URL. An attacker can modify the request header 'HOST' value to cause the server to send the request.