  public function IsQmail() {
    if (stristr(ini_get('sendmail_path'), 'qmail')) {
      $this->Sendmail = '/var/qmail/bin/sendmail';
    }
    $this->Mailer = 'sendmail';
  }
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.