          authHandler: function(methodsLeft, partial, cb) {
            assert(calls++ === 0, makeMsg('authHandler called multiple times'));
            assert(methodsLeft === null, makeMsg('expected null methodsLeft'));
            assert(partial === null, makeMsg('expected null partial'));
            return 'none';
          }
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.