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CVE-2026-33459— Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

Quick assessment

Affected
Elastic Kibana
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.

Elastic Kibana是Elastic公司的一个可用数据可视化仪表板软件。 Elastic Kibana存在安全漏洞，该漏洞源于资源消耗不受控制，可能导致具有自动导入功能访问权限的经过身份验证的用户通过发送特制请求造成拒绝服务。

CVSS 6.5 · Medium EPSS 0.47% · P38
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I. Basic Information for CVE-2026-33459

Vulnerability Information
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Vulnerability Title
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with access to the automatic import feature can submit specially crafted requests with excessively large input values. When multiple such requests are sent concurrently, the backend services become unstable, resulting in service disruption and deployment unavailability for all users.
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 Kibana 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana是Elastic公司的一个可用数据可视化仪表板软件。 Elastic Kibana存在安全漏洞，该漏洞源于资源消耗不受控制，可能导致具有自动导入功能访问权限的经过身份验证的用户通过发送特制请求造成拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
Elastic Kibana 9.3.0 ~ 9.3.2 -

II. Public POCs for CVE-2026-33459

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III. Intelligence Information for CVE-2026-33459

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Same Patch Batch · Elastic · 2026-04-08 · 6 CVEs total

CVE-2026-33466 8.1 HIGH Improper Limitation of a Pathname to a Restricted Directory in Logstash Leading to Arbitra
CVE-2026-4498 7.7 HIGH Execution with Unnecessary Privileges in Kibana Leading to reading index data beyond their
CVE-2026-33461 7.7 HIGH Incorrect Authorization in Kibana Fleet Leading to Information Disclosure
CVE-2026-33458 6.8 MEDIUM Server-Side Request Forgery (SSRF) in Kibana One Workflow Leading to Information Disclosur
CVE-2026-33460 4.3 MEDIUM Incorrect Authorization in Kibana Fleet Leading to Information Disclosure

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-33459

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