An issue was discovered in FusionPBX before 4.5.30. The fax_post_size may have risky characters (it is not constrained to preset values).

An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).

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.

In FusionPBX up to v4.5.7, the file app\call_broadcast\call_broadcast_edit.php uses an unsanitized "id" variable coming from the URL in an unparameterized SQL query, leading to SQL injection.

app/operator_panel/exec.php in the Operator Panel module in FusionPBX 4.4.3 suffers from a command injection vulnerability due to a lack of input validation that allows authenticated non-administrative attackers to execute commands on the host. This can further lead to remote code execution when combined with an XSS vulnerability also present in the FusionPBX Operator Panel module.