            req.cb(undefined, stats);
            return;
          }
          default:
            // Unknown extended request
            sftp._debug && sftp._debug(
              `SFTP: Inbound: Received EXTENDED_REPLY (id:${reqID}, ???)`
            );
            bufferParser.clear();
            req.cb();
            return;
        }
      } else {
        sftp._debug && sftp._debug(
          `SFTP: Inbound: Received EXTENDED_REPLY (id:${reqID}, ???)`
        );
        bufferParser.clear();
        return;
      }
    }

    bufferParser.clear();
    return doFatalSFTPError(sftp, 'Malformed EXTENDED_REPLY packet');
  },
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.