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CVE-2026-56145— Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

CVSS 6.5 · Medium EPSS 0.29% · P21

Affected Version Matrix 3

VendorProductVersion RangeStatus
ElasticElasticsearch9.4.0≤ 9.4.3affected
8.0.0≤ 8.19.17affected
9.0.0≤ 9.3.6affected
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I. Basic Information for CVE-2026-56145

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 to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
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
Vulnerability Title
Elastic Elasticsearch 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Elasticsearch是荷兰Elastic公司开源的一个搜索分析引擎。 Elastic Elasticsearch 8.19.17及之前版本和9.3.6及之前版本和9.4.3及之前版本存在资源管理错误漏洞，该漏洞源于未受控的资源消耗，可能导致低权限授权用户发送特制查询触发过度内存消耗，导致Elasticsearch节点崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
ElasticElasticsearch 9.4.0 ~ 9.4.3 -

II. Public POCs for CVE-2026-56145

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III. Intelligence Information for CVE-2026-56145

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Vendor Advisories for CVE-2026-56145 (1)

Same Patch Batch · Elastic · 2026-07-21 · 19 CVEs total

CVE-2026-561477.1 HIGHAuthorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Informa
CVE-2026-631366.5 MEDIUMUncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-632636.5 MEDIUMUncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-632606.5 MEDIUMUncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-632616.5 MEDIUMUncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-631446.5 MEDIUMUncontrolled Recursion in Elasticsearch Leading to Denial of Service
CVE-2026-631406.5 MEDIUMReachable Assertion in Elasticsearch Leading to Denial of Service
CVE-2026-631396.5 MEDIUMUncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-423976.5 MEDIUMAllocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-631416.3 MEDIUMMissing Authorization in Kibana Leading to Unauthorized Access to Cloud Connect Management
CVE-2026-561465.4 MEDIUMImproper Access Control in Kibana Leading to Unauthorized Data Modification and Informatio
CVE-2026-561445.3 MEDIUMIncorrect Authorization in Elasticsearch Leading to Information Disclosure
CVE-2026-631425.0 MEDIUMIncomplete List of Disallowed Inputs in Kibana Leading to Server-Side Request Forgery
CVE-2026-631434.3 MEDIUMMissing Authorization in Kibana Leading to Unauthorized Information Disclosure
CVE-2026-632594.3 MEDIUMAuthorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosu
CVE-2026-490924.3 MEDIUMUnintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Unauthorized Inf
CVE-2026-631454.3 MEDIUMIncorrect Authorization in Kibana Leading to Machine Learning Audit Log Integrity Compromi
CVE-2026-632624.3 MEDIUMMissing Authorization in Kibana Leading to Information Disclosure

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-56145

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