  explicit RenderFrameHostDestructionObserver(RenderFrameHost* rfh)
      : WebContentsObserver(WebContents::FromRenderFrameHost(rfh)),
        message_loop_runner_(new MessageLoopRunner),
        deleted_(false),
        render_frame_host_(rfh) {}

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.