Language: PHP
Label: vulnerable
CWE: CWE-829 \u2014 Inclusion of Functionality from Untrusted Control Sphere
The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

Code:
                foreach($row as $field) {

                    if(is_null($field)) {
                        
                        $fieldData .= " NULL,";

                    } elseif( is_numeric($field) ) {

                        $fieldData .= " ".$field.",";

                    } else {
                        
                        $fieldData .= " '". $conn->real_escape_string($field) ."',";

                    }

                }