---
id: CVE-2026-56144
title: >-
  Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated
  user with limited index privileges to exploit insufficient authorization
  controls in the ingest simulation feature
summary: >-
  Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated
  user with limited index privileges to exploit insufficient authorization
  controls in the ingest simulation feature. By targeting indices they are not
  authorize…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-863
vendor: elastic
product: elasticsearch
affected:
  - 'elasticsearch >= 8.12.0, < 8.19.18'
  - 'elasticsearch >= 9.0.0, < 9.3.7'
  - 'elasticsearch >= 9.4.0, < 9.4.4'
patched:
  - elasticsearch 9.4.4
published: '2026-07-21'
updated: '2026-08-07'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56144'
references:
  - url: >-
      https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-56/388555
    label: security@elastic.co
tags:
  - nvd
epss: 0.00321
epssPercentile: 0.22535
ingestedAt: '2026-08-07T22:17:38.261Z'
---

## Overview

Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated user with limited index privileges to exploit insufficient authorization controls in the ingest simulation feature. By targeting indices they are not authorized to access directly, the user can cause those indices' configured ingest pipelines to execute and return their output, potentially disclosing data processed or enriched by those pipelines. Additionally, the same feature can be used to retrieve index mapping metadata for indices the user are not authorized to access directly.

## Affected

- `elasticsearch >= 8.12.0, < 8.19.18`
- `elasticsearch >= 9.0.0, < 9.3.7`
- `elasticsearch >= 9.4.0, < 9.4.4`

## Remediation

Upgrade past the affected range:

- `elasticsearch 9.4.4`