CVE-2026-94398

Analyzed Analyzed - Analysis Complete

Uncontrolled Resource Consumption in Elasticsearch

Publication date: 2026-09-26

Last updated on: 2026-09-29

Assigner: Elastic

Description

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocation (CAPEC-130)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-26

Last Modified

2026-09-29

Generated

2026-10-17

AI Q&A

2026-09-27

EPSS Evaluated

2026-10-16

NVD

CVE-2026-94398

Affected Vendors & Products

Vendor	Product	Version / Range
elastic	elasticsearch	From 9.0.0 (inc) to 9.4.7 (exc)
elastic	elasticsearch	From 9.5.0 (inc) to 9.5.4 (exc)
elastic	elasticsearch	From 8.12.0 (inc) to 8.19.22 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This vulnerability is an uncontrolled resource consumption issue in Elasticsearch that can cause a denial of service through excessive allocation. It is classified under CWE-400 and follows the attack pattern CAPEC-130.

Impact Analysis

The vulnerability may allow an attacker with access to the system to consume excessive resources, leading to service degradation or complete denial of service. This can disrupt operations relying on Elasticsearch.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling denial of service attacks, which may disrupt availability of critical data processing systems. Uncontrolled resource consumption may lead to service outages, violating requirements for data availability under GDPR Article 32 and HIPAA Security Rule Section 164.308(a)(7).

Mitigation Strategies

Update Elasticsearch to the latest patched version immediately to address uncontrolled resource consumption. Monitor system resources for unusual spikes in CPU or memory usage that may indicate exploitation attempts. Limit network exposure by restricting access to Elasticsearch ports via firewalls.

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