CVE-2026-56143

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted request that causes excessive memory consumption, which may render the affected node unavailable.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://discuss.elastic.co/t/elasticsearch-8-19-20-9-3-0-security-update-esa-2026-47/390084	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:elastic:elasticsearch::::::::
	cpe:2.3:a:elastic:elasticsearch::::::::

History

No history.

Information

Published : 2026-09-01 20:17

Updated : 2026-09-04 20:04

NVD link : CVE-2026-56143

Mitre link : CVE-2026-56143

CVE.ORG link : CVE-2026-56143

JSON object : View

Products Affected

elastic

elasticsearch

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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