content::KeyboardEventProcessingResult Browser::PreHandleKeyboardEvent(
    content::WebContents* source,
    const NativeWebKeyboardEvent& event) {
  if (exclusive_access_manager_->HandleUserKeyEvent(event))
    return content::KeyboardEventProcessingResult::HANDLED;

  return window()->PreHandleKeyboardEvent(event);
}

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.