Description
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted machine learning request that causes excessive memory consumption, which may render the affected node unavailable.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Elastic | Elasticsearch | 9.4.0 – ≤ 9.4.2, 9.0.0 – ≤ 9.3.5, 8.0.0 – ≤ 8.19.16 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | elasticsearch | No fix yet | — |
Advisories 1
- WID-SEC-2026-2180 Elasticsearch: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jul 14, 2026