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CVE-2026-94398— Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service

Quick assessment

Affected
Elastic Elasticsearch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Elasticsearch 中的非受控资源消耗（CWE-400）可能导致拒绝服务，原因是过度分配（CAPEC-130）。

CVSS 6.5 · Medium EPSS 0.41% · P33
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I. Basic Information for CVE-2026-94398

Vulnerability Information
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Vulnerability Title
Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocation (CAPEC-130)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Elastic Elasticsearch 8.12.0 ~ 8.19.21 -

II. Public POCs for CVE-2026-94398

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III. Intelligence Information for CVE-2026-94398

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Other References for CVE-2026-94398 (1)

Same Patch Batch · Elastic · 2026-09-26 · 11 CVEs total

CVE-2026-72668 7.3 HIGH Unintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Privilege Escala
CVE-2026-94397 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-94396 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-94400 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to denial of service
CVE-2026-94399 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-82300 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-82294 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-78582 6.5 MEDIUM Missing Authorization in Kibana Leading to Unauthorized Deletion of Data
CVE-2026-72662 6.3 MEDIUM Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclos
CVE-2026-94408 4.9 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service

IV. Related Vulnerabilities

Same product: Elasticsearch
Same vendor: Elastic
Same weakness: CWE-400

V. Comments for CVE-2026-94398

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