CVE-2026-56150

MEDIUM

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

Title source: cna

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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 6.5

EPSS 0.0030

EPSS Percentile 21.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-770

Status published

Products (2)

Elastic/Fleet Server 8.0.0 - 8.19.10

Elastic/Fleet Server 9.0.0 - 9.2.4

Published Jul 01, 2026

Tracked Since Jul 01, 2026