Use of Multiple Resources with Duplicate Identifier in APM Server Leading to Information Disclosure

published 2026-11-03 6 d ago modified 2026-11-03 5 d ago also EUVD-2026-116071

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-115289 updated 2026-11-07 cvss 4.3

apm-server: APM Server: Information disclosure via crafted agent configuration request

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 6 d ago (2026-11-03)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

Elastic APM Server

Classification

Weakness

CWE-694 Use of Multiple Resources with Duplicate Identifier

References

discuss.elastic.co /t/apm-server-8-19-24-9-4-9-9-5-6-security-update-esa-2026-200/391355

Sources

CVE List CVE-2026-115289
NVD CVE-2026-115289

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary