void DownloadManagerImpl::CreateSavePackageDownloadItem(
    const base::FilePath& main_file_path,
    const GURL& page_url,
    const std::string& mime_type,
    std::unique_ptr<DownloadRequestHandleInterface> request_handle,
    const DownloadItemImplCreated& item_created) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  GetNextId(base::Bind(
      &DownloadManagerImpl::CreateSavePackageDownloadItemWithId,
      weak_factory_.GetWeakPtr(), main_file_path, page_url, mime_type,
      base::Passed(std::move(request_handle)), item_created));
}

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.