ElasticCVE-2026-56149
Elasticsearch: denial of service
Medium4.9CVE-2026-56149 · Published Jul 1, 2026 · updated Jul 2, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Elasticsearch Product | >= 9.4.0, <= 9.4.2 | No fix yet |
| >= 9.0.0, <= 9.3.5 | No fix yet | |
| >= 8.0.0, <= 8.19.16 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-770
More Elastic advisories
All Elastic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 1 | Elastic Kibana: tampering | High8.0 | No fix yet |
| Jul 1 | Elasticsearch: resource exhaustion | Medium6.5 | No fix yet |
| Jul 1 | Elastic Fleet Server: denial of service | Medium6.5 | No fix yet |
| Jul 1 | Elastic Kibana: improper input validation | Medium6.5 | No fix yet |
| Jul 1 | Elastic Kibana: improper authorization | Medium5.3 | No fix yet |
| Jul 1 | Elasticsearch: denial of service | Medium6.5 | No fix yet |