ServiceWorkerContainer::ServiceWorkerContainer(ExecutionContext* executionContext)
    : ContextLifecycleObserver(executionContext)
    , m_provider(0)
{

    if (!executionContext)
        return;

    if (ServiceWorkerContainerClient* client = ServiceWorkerContainerClient::from(executionContext)) {
        m_provider = client->provider();
        if (m_provider)
            m_provider->setClient(this);
    }
}

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.