---
id: CVE-2026-115289
title: >-
  Use of Multiple Resources with Duplicate Identifier in APM Server Leading to
  Information Disclosure
summary: >-
  Use of Multiple Resources with Duplicate Identifier (CWE-694) in APM Server
  can lead to information disclosure via a specially crafted agent configuration
  request. An authenticated APM agent could receive the central agent
  configuration …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-694
vendor: Elastic
product: APM Server
affected:
  - apm_server >= 8.0.0 <= 8.19.23
  - apm_server >= 9.0.0 <= 9.4.8
  - apm_server >= 9.5.0 <= 9.5.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-03T17:36:32.290044Z'
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T17:36:41.024Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115289'
references:
  - url: >-
      https://discuss.elastic.co/t/apm-server-8-19-24-9-4-9-9-5-6-security-update-esa-2026-200/391355
tags:
  - cve.org
epss: 0.00241
epssPercentile: 0.15398
ingestedAt: '2026-11-05T20:33:06.325Z'
---

## Overview

Use of Multiple Resources with Duplicate Identifier (CWE-694) in APM Server can lead to information disclosure via a specially crafted agent configuration request. An authenticated APM agent could receive the central agent configuration that belongs to a different service until the cached configuration expires. A service could also run with central configuration settings, such as sampling settings, that were meant for a different service.

## Affected

- `apm_server >= 8.0.0 <= 8.19.23`
- `apm_server >= 9.0.0 <= 9.4.8`
- `apm_server >= 9.5.0 <= 9.5.5`

## Remediation

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