mojom::WidgetInputHandler* RenderWidgetHostImpl::GetWidgetInputHandler() {
  if (associated_widget_input_handler_)
    return associated_widget_input_handler_.get();
  if (widget_input_handler_)
    return widget_input_handler_.get();
  return g_unbound_input_handler.Pointer();
}

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.