std::string SessionStore::WriteBatch::PutWithoutUpdatingTracker(
    const sync_pb::SessionSpecifics& specifics) {
  DCHECK(AreValidSpecifics(specifics));

  const std::string storage_key = GetStorageKey(specifics);
  batch_->WriteData(storage_key, specifics.SerializeAsString());
  return storage_key;
}

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.