void ResourceDispatcherHostImpl::BlockRequestsForRoute(int child_id,
                                                       int route_id) {
  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  ProcessRouteIDs key(child_id, route_id);
  DCHECK(blocked_loaders_map_.find(key) == blocked_loaders_map_.end()) <<
      "BlockRequestsForRoute called  multiple time for the same RVH";
  blocked_loaders_map_[key] = new BlockedLoadersList();
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.