CVE-2026-56150: 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 specia

mediumCVSS 6.5CVE-2026-56150

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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 6.5
Published: 2026-07-01
Last updated: 2026-07-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-56150

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-561500.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-56150	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Fleet: Vulnerability allows Denial of Servicecert-bund
unknownMultiple vulnerabilities in Elastic products (July 2, 2026)cert-fr-avis

Recent advisories for Allocation of Resources

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-40006: Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttl…nvd · 2026-07-10
highCVE-2026-31984: A denial-of-service vulnerability caused by unbounded resource allocation was discovered in th…nvd · 2026-07-09
highCVE-2026-56811: Allocation of Resources Without Limits or Throttling vulnerability in phoenixframework phoenix…nvd · 2026-07-07
unknownCVE-2026-56810: Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint (Mint.H…nvd · 2026-07-06
mediumCVE-2026-56149: Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Ser…msrc · 2026-07-02
highCVE-2026-54428: Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache Htt…nvd · 2026-07-01