  void SimulateGesturePinchUpdateEvent(float scale,
                                       float anchorX,
                                       float anchorY,
                                       int modifiers) {
    SimulateGestureEventCore(SyntheticWebGestureEventBuilder::BuildPinchUpdate(
        scale, anchorX, anchorY, modifiers,
        blink::kWebGestureDeviceTouchscreen));
  }

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.