WebUIImpl* RenderFrameHostManager::GetNavigatingWebUI() const {
  if (speculative_render_frame_host_)
    return speculative_render_frame_host_->web_ui();
  return render_frame_host_->pending_web_ui();
}

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.