---
id: CVE-2026-82294
title: >-
  Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to
  denial of service via Excessive Allocation (CAPEC-130).
summary: >-
  Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to
  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, < 8.19.21'
  - 'elasticsearch >= 9.0.0, < 9.4.6'
  - 'elasticsearch >= 9.5.0, < 9.5.3'
patched:
  - elasticsearch 9.5.3
published: '2026-09-26'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T18:41:14.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82294'
references:
  - url: >-
      https://discuss.elastic.co/t/elasticsearch-8-19-21-9-4-6-9-5-3-security-update-esa-2026-170/390681
    label: security@elastic.co
tags:
  - nvd
  - cve.org
epss: 0.0024
epssPercentile: 0.15041
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-26T23:00:51.354377Z'
ingestedAt: '2026-09-26T21:38:01.502Z'
---

## Overview

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

## Affected

- `elasticsearch >= 8.0.0, < 8.19.21`
- `elasticsearch >= 9.0.0, < 9.4.6`
- `elasticsearch >= 9.5.0, < 9.5.3`

## Remediation

Upgrade past the affected range:

- `elasticsearch 9.5.3`