  rekey() {
    if (this._kexinit === undefined) {
      this._debug && this._debug('Outbound: Initiated explicit rekey');
      this._queue = [];
      kexinit(this);
    } else {
      this._debug && this._debug('Outbound: Ignoring rekey during handshake');
    }
  }
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.