What’s Vulnerable › Vulnerabilities
CVE-2026-56150: Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of Service
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-01 · updated 2026-10-25
- Weakness: CWE-770
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.
Affected products
- Elastic Fleet Server: from 8.0.0 before 8.19.11; from 9.0.0 before 9.2.5 — fixed in 8.19.11, 9.2.5
How to fix
Upgrade to a fixed version: Elastic Fleet Server 8.19.11, 9.2.5. Check the vendor advisory for mitigations.
References
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