Insecure handling of POST header parameter body included in requests being sent to an instance of the open-source project Phoniebox allows an attacker to create a website, which ?? when visited by a user ?? will send malicious requests to multiple hosts on the local network. If such a request reaches the server, it will cause a shell command execution.
This issue affects Phoniebox in all releases through 2.7. Newer releases were not tested, but they might also be vulnerable.