  function tryNextAuth() {
    hasSentAuth = false;
    var auth = authHandler(curAuthsLeft, curPartial, doNextAuth);
    if (hasSentAuth || auth === undefined)
      return;
    doNextAuth(auth);
  }
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.