CVE-2026-56145 - Vulnerability Details - OpenCVE

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Elastic	Elasticsearch

No data.

No data.

References

Link	Providers
https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-57/388556

History

Thu, 23 Jul 2026 05:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Elastic Elastic elasticsearch
Vendors & Products		Elastic Elastic elasticsearch

Wed, 22 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 21 Jul 2026 20:15:00 +0000

Type	Values Removed	Values Added
Description		Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
Title		Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
Weaknesses		CWE-400
References		https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-57/388556
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: elastic

Published: 2026-07-21T20:04:47.033Z

Updated: 2026-07-22T18:25:22.708Z

Reserved: 2026-06-19T11:01:02.535Z

Link: CVE-2026-56145

Vulnrichment

Updated: 2026-07-22T18:13:58.347Z

NVD

No data.

Redhat

No data.

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