 void AppCacheGroup::RemoveCache(AppCache* cache) {
   DCHECK(cache->associated_hosts().empty());
   if (cache == newest_complete_cache_) {
     AppCache* tmp_cache = newest_complete_cache_;
     newest_complete_cache_ = nullptr;
    CancelUpdate();
     tmp_cache->set_owning_group(nullptr);  // may cause this group to be deleted
   } else {
     scoped_refptr<AppCacheGroup> protect(this);

    Caches::iterator it =
        std::find(old_caches_.begin(), old_caches_.end(), cache);
    if (it != old_caches_.end()) {
      AppCache* tmp_cache = *it;
      old_caches_.erase(it);
      tmp_cache->set_owning_group(nullptr);  // may cause group to be released
    }

    if (!is_obsolete() && old_caches_.empty() &&
        !newly_deletable_response_ids_.empty()) {
      storage_->DeleteResponses(manifest_url_, newly_deletable_response_ids_);
      newly_deletable_response_ids_.clear();
    }
  }
}

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.