Vulnerability · Published Nov 3, 2026 · Assigned by elastic
CVE-2026-115289Use of Multiple Resources with Duplicate Identifier in APM Server Leading to Information Disclosure
Medium 4.3
In plain English
A medium-severity security flaw in APM Server from Elastic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Elastic | APM Server | 8.0.0 – through 8.19.239.0.0 – through 9.4.89.5.0 – through 9.5.5 |
Weakness: CWE-694 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N