        function onReady() {
          // TODO: do not remove exit/close in case remote end closes the
          // channel abruptly and we need to notify outstanding callbacks
          removeListeners();
          cb(undefined, 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.