Response PageHandler::HandleJavaScriptDialog(bool accept,
                                             Maybe<std::string> prompt_text) {
  WebContentsImpl* web_contents = GetWebContents();
  if (!web_contents)
    return Response::InternalError();

  if (pending_dialog_.is_null())
    return Response::InvalidParams("No dialog is showing");

  base::string16 prompt_override;
  if (prompt_text.isJust())
    prompt_override = base::UTF8ToUTF16(prompt_text.fromJust());
  std::move(pending_dialog_).Run(accept, prompt_override);

  if (web_contents->GetDelegate()) {
    JavaScriptDialogManager* manager =
        web_contents->GetDelegate()->GetJavaScriptDialogManager(web_contents);
    if (manager) {
      manager->HandleJavaScriptDialog(
          web_contents, accept,
          prompt_text.isJust() ? &prompt_override : nullptr);
    }
  }

  return Response::OK();
}

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.