---
id: CVE-2026-115290
title: Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
summary: >-
  Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of
  service via Serialized Data with Nested Payloads (CAPEC-230). An
  unauthenticated attacker with network access to the remote cluster server
  interface of a node can se…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-674
vendor: Elastic
product: Elasticsearch
affected:
  - Elasticsearch >= 8.10.0 <= 8.19.23
  - Elasticsearch >= 9.0.0 <= 9.4.8
  - Elasticsearch >= 9.5.0 <= 9.5.5
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-03T17:35:42.569226Z'
exploitAvailable: true
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T17:36:07.924Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115290'
references:
  - url: >-
      https://discuss.elastic.co/t/elasticsearch-8-19-24-9-4-9-9-5-6-security-update-esa-2026-201/391356
tags:
  - cve.org
  - exploit-available
epss: 0.00413
epssPercentile: 0.35709
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/googlesky/CVE-2026-115290'
  checkedAt: '2026-11-05T20:33:42.452Z'
ingestedAt: '2026-11-05T20:33:06.324Z'
---

## Overview

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads (CAPEC-230). An unauthenticated attacker with network access to the remote cluster server interface of a node can send a specially crafted request that causes the node to terminate. No credentials are required. The attacker can repeat the request against each reachable node.

## Affected

- `Elasticsearch >= 8.10.0 <= 8.19.23`
- `Elasticsearch >= 9.0.0 <= 9.4.8`
- `Elasticsearch >= 9.5.0 <= 9.5.5`

## Remediation

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