---
id: CVE-2026-94399
title: >-
  Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial
  of service via Excessive Allocation (CAPEC-130)
summary: >-
  Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial
  of service via Excessive Allocation (CAPEC-130)
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: elastic
product: elasticsearch
affected:
  - 'elasticsearch >= 8.0.0, < 8.19.22'
  - 'elasticsearch >= 9.0.0, < 9.4.7'
  - 'elasticsearch >= 9.5.0, < 9.5.4'
patched:
  - elasticsearch 9.5.4
published: '2026-09-26'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T20:15:11.523'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94399'
references:
  - url: >-
      https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-180/390684
    label: security@elastic.co
tags:
  - nvd
  - cve.org
epss: 0.0024
epssPercentile: 0.1504
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-26T22:59:56.181888Z'
ingestedAt: '2026-09-26T21:38:01.504Z'
---

## Overview

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocation (CAPEC-130)

## Affected

- `elasticsearch >= 8.0.0, < 8.19.22`
- `elasticsearch >= 9.0.0, < 9.4.7`
- `elasticsearch >= 9.5.0, < 9.5.4`

## Remediation

Upgrade past the affected range:

- `elasticsearch 9.5.4`