Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can allow a low-privileged authenticated user to cause Excessive Allocation (CAPEC-130) causing a persistent denial of service (OOM crash) via submission of oversized user settings data.
https://discuss.elastic.co/t/elasticsearch-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-33/384181