void NavigationRequest::RegisterSubresourceOverride(
    mojom::TransferrableURLLoaderPtr transferrable_loader) {
  if (!subresource_overrides_)
    subresource_overrides_.emplace();

  subresource_overrides_->push_back(std::move(transferrable_loader));
}

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.