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CVE-2026-63139— 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是荷兰Elastic公司开源的一个数据可视化平台。 Elastic Kibana 8.0.0版本、9.4.0版本和9.3.0版本存在资源管理错误漏洞，该漏洞源于Canvas功能中存在不受控制的资源消耗问题，可能导致经过身份验证的低权限用户通过发送特制请求，造成服务器进程终止，从而导致拒绝服务。以下版本受到影响：8.19.18及之前版本、9.4.3及之前版本和9.3.7及之前版本。

CVSS 6.5 · Medium EPSS 0.47% · P38

Affected Version Matrix 3

VendorProduct Version RangeStatus
Elastic Kibana 8.0.0≤ 8.19.18 affected
9.4.0≤ 9.4.3 affected
9.3.0≤ 9.3.7 affected
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I. Basic Information for CVE-2026-63139

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 low-privileged user can exploit an uncontrolled resource consumption vulnerability in Kibana's Canvas functionality by sending a specially crafted request, causing the Kibana server process to terminate and resulting in a denial of service for all users of the affected Kibana instance.
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 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic kibana是荷兰Elastic公司开源的一个数据可视化平台。 Elastic Kibana 8.0.0版本、9.4.0版本和9.3.0版本存在资源管理错误漏洞，该漏洞源于Canvas功能中存在不受控制的资源消耗问题，可能导致经过身份验证的低权限用户通过发送特制请求，造成服务器进程终止，从而导致拒绝服务。以下版本受到影响：8.19.18及之前版本、9.4.3及之前版本和9.3.7及之前版本。
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 8.0.0 ~ 8.19.18 -

II. Public POCs for CVE-2026-63139

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III. Intelligence Information for CVE-2026-63139

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Vendor Advisories for CVE-2026-63139 (1)

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

CVE-2026-56147 7.1 HIGH Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Informa
CVE-2026-63136 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-63263 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-63260 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-63261 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-63144 6.5 MEDIUM Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
CVE-2026-63140 6.5 MEDIUM Reachable Assertion in Elasticsearch Leading to Denial of Service
CVE-2026-56145 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-42397 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-63141 6.3 MEDIUM Missing Authorization in Kibana Leading to Unauthorized Access to Cloud Connect Management
CVE-2026-56146 5.4 MEDIUM Improper Access Control in Kibana Leading to Unauthorized Data Modification and Informatio
CVE-2026-56144 5.3 MEDIUM Incorrect Authorization in Elasticsearch Leading to Information Disclosure
CVE-2026-63142 5.0 MEDIUM Incomplete List of Disallowed Inputs in Kibana Leading to Server-Side Request Forgery
CVE-2026-63143 4.3 MEDIUM Missing Authorization in Kibana Leading to Unauthorized Information Disclosure
CVE-2026-63259 4.3 MEDIUM Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosu
CVE-2026-49092 4.3 MEDIUM Unintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Unauthorized Inf
CVE-2026-63145 4.3 MEDIUM Incorrect Authorization in Kibana Leading to Machine Learning Audit Log Integrity Compromi
CVE-2026-63262 4.3 MEDIUM Missing Authorization in Kibana Leading to Information Disclosure

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-63139

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