---
id: CVE-2026-102409
title: >-
  Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated
  user with low privileges to terminate an Elasticsearch node, resulting in
  denial of service, via Excessive Allocation (CAPEC-130).
summary: >-
  Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated
  user with low privileges to terminate an Elasticsearch node, resulting in
  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-674
vendor: Elastic
product: Elasticsearch
affected:
  - Elasticsearch >= 9.2.0 <= 9.2.8
  - Elasticsearch >= 9.3.0 <= 9.3.8
  - Elasticsearch >= 9.4.0 <= 9.4.7
  - Elasticsearch >= 9.5.0 <= 9.5.4
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T20:17:12.907'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102409'
references:
  - url: >-
      https://discuss.elastic.co/t/elasticsearch-9-4-8-9-5-5-security-update-esa-2026-190/390863
    label: security@elastic.co
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T19:55:32.046618Z'
ingestedAt: '2026-10-06T20:16:42.468Z'
---

## Overview

Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.