# Fleet Server 8.19.11, 9.2.5, 9.3.0 Security Update (ESA-2026-44)

**URL:** <https://discuss.elastic.co/t/fleet-server-8-19-11-9-2-5-9-3-0-security-update-esa-2026-44/387441>\
**Category:** Security Announcements\
**Created:** [July 1, 2026, 1:53pm UTC](https://discuss.elastic.co/t/fleet-server-8-19-11-9-2-5-9-3-0-security-update-esa-2026-44/387441 "2026-07-01T13:53:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kruskall](https://avatars.discourse-cdn.com/v4/letter/k/ac91a4/32.png) [@kruskall](https://discuss.elastic.co/u/kruskall)\
**Post date:** [July 1, 2026, 1:53pm UTC](https://discuss.elastic.co/t/fleet-server-8-19-11-9-2-5-9-3-0-security-update-esa-2026-44/387441/1 "2026-07-01T13:53:44Z")

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

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.

**Affected Versions:**

- 8.x: All versions from 8.0.0 up to and including 8.19.10
- 9.x:
  - All versions from 9.0.0 up to and including 9.2.4

**Affected Configurations:**

- All configurations are affected.

**Solutions and Mitigations:**

The issue is resolved in version 8.19.11, 9.2.5, and 9.3.0.

**For Users that Cannot Upgrade:**

There are no workarounds for this vulnerability.

**Indicators of Compromise (IOC)**

No specific indicators of compromise have been identified for this vulnerability.

**Severity:** CVSSv3.1: Medium ( 6.5 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H  
**CVE ID:** CVE-2026-56150  
**Problem Type:** CWE-770 - Allocation of Resources Without Limits or Throttling  
**Impact:** CAPEC-130 - Excessive Allocation