CVE-2026-56150: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Fleet Server
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.
AI Analysis
Technical Summary
CVE-2026-56150 describes a resource exhaustion vulnerability (CWE-770) in Elastic Fleet Server. Specifically, the server does not impose limits or throttling on resource allocation when processing certain upload requests. An attacker with privileges to submit requests can exploit this by sending specially crafted payloads that cause excessive memory usage, potentially resulting in denial of service. The affected versions explicitly include 8.0.0 and 9.0.0. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation leads to denial of service by exhausting memory resources on the Fleet Server, rendering it unavailable. There is no impact on confidentiality or integrity reported. The attack requires at least limited privileges to submit requests to the upload endpoint.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual memory consumption related to upload endpoints and consider restricting access to these endpoints to trusted users only.
CVE-2026-56150: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Fleet Server
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.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/elastic/fleet-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-56150 describes a resource exhaustion vulnerability (CWE-770) in Elastic Fleet Server. Specifically, the server does not impose limits or throttling on resource allocation when processing certain upload requests. An attacker with privileges to submit requests can exploit this by sending specially crafted payloads that cause excessive memory usage, potentially resulting in denial of service. The affected versions explicitly include 8.0.0 and 9.0.0. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation leads to denial of service by exhausting memory resources on the Fleet Server, rendering it unavailable. There is no impact on confidentiality or integrity reported. The attack requires at least limited privileges to submit requests to the upload endpoint.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual memory consumption related to upload endpoints and consider restricting access to these endpoints to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-06-19T11:01:02.535Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45492b27e9c79719d62121
Added to database: 07/01/2026, 17:06:51 UTC
Last enriched: 07/01/2026, 17:22:36 UTC
Last updated: 07/01/2026, 21:26:15 UTC
Views: 8
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