void CrostiniUpgrader::Cancel() {
  CrostiniManager::GetForProfile(profile_)->CancelUpgradeContainer(
      container_id_, base::BindOnce(&CrostiniUpgrader::OnCancel,
                                    weak_ptr_factory_.GetWeakPtr()));
}

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.