      function onReady() {
        sftp.removeListener('error', onError);
        stream.removeListener('exit', onExit);
        cb(undefined, new SFTPWrapper(sftp));
      }
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.