CVE-2026-56149

Published: Jul 1, 2026Modified: Jul 2, 2026

4.9

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.2 / Impact: 3.6

Source: security@elastic.co (Secondary)

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 (3)

Products: Elastic: Elasticsearch

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Elastic Elasticsearch	8.0.0 ≤ version < 8.19.17
Elastic Elasticsearch	9.0.0 ≤ version < 9.3.6
Elastic Elasticsearch	9.4.0 ≤ version < 9.4.3

Related CWEs

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (1)

https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43

Source: security@elastic.co

Vendor Advisory

Timeline

No history available yet.