CVE-2026-56150

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

State: Published
Severity: 6.5 Medium
Published: Jul 1, 2026
Updated: Jul 1, 2026
Reserved: Jun 19, 2026

Description

Allocation of Resources Without Limits or Throttling (CWE-770) in Fleet Server can lead to a denial of service via Excessive Allocation (CAPEC-130). An attacker can submit a specially crafted request to an upload endpoint that causes excessive memory consumption, which may render Fleet Server unavailable.

Scores

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

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
Fleet ServerElastic	9.0.0 through 9.2.4Affected 8.0.0 through 8.19.10Affected

References

https://discuss.elastic.co/t/fleet-server-8-19-11-9-2-5-9-3-0-security-update-esa-2026-44

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