app/call_centers/cmd.php in the Call Center Queue Module in FusionPBX up to 4.5.7 suffers from a command injection vulnerability due to a lack of input validation, which allows authenticated attackers (with at least the permission call_center_queue_add or call_center_queue_edit) to execute any commands on the host as www-data.
https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-sofia-api-command-injection-1/
https://github.com/fusionpbx/fusionpbx/commit/2f9e591a4034c3aea70185dcab837946096449bf