CVE-2026-115716 PUBLISHED

Allocation of Resources Without Limits or Throttling in APM Server Leading to Denial of Service

Assigner: elastic
Reserved: 23.10.2026 Published: 03.11.2026 Updated: 03.11.2026

Allocation of Resources Without Limits or Throttling (CWE-770) in APM Server can lead to denial of service via Oversized Serialized Data Payloads (CAPEC-231). An attacker who can send OpenTelemetry (OTLP) data to APM Server over HTTP can cause APM Server to exhaust its memory and terminate. This stops the intake of APM and OpenTelemetry data until APM Server restarts.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Elastic
Product	APM Server
Versions	Default: unaffected affected from 8.3.0 to 8.19.23 (incl.) affected from 9.0.0 to 9.4.8 (incl.) affected from 9.5.0 to 9.5.5 (incl.)

References

https://discuss.elastic.co/t/apm-server-8-19-24-9-4-9-9-5-6-security-update-esa-2026-236/391373

Problem Types

CWE-770 Allocation of Resources Without Limits or Throttling CWE

Impacts

CAPEC-231 Oversized Serialized Data Payloads