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CVE-2026-49094— 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，该漏洞源于不受控制的资源消耗，可能导致拒绝服务攻击。具有查看器级别访问权限的经过身份验证的用户可以向分析集合管理端点提交包含过大输入值的请求，Kibana在处理请求时会消耗过多的CPU和内存资源，导致Kibana对所有用户不可用，直到服务手动恢复。

CVSS 6.5 · Medium EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Elastic Kibana 8.0.0≤ 8.19.15 affected
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I. Basic Information for CVE-2026-49094

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 viewer-level access can submit a request containing an oversized input value to an analytics collections management endpoint. Kibana will consume excessive CPU and memory resources while processing the request. This results in Kibana becoming unavailable to all users until the service is manually recovered.
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，该漏洞源于不受控制的资源消耗，可能导致拒绝服务攻击。具有查看器级别访问权限的经过身份验证的用户可以向分析集合管理端点提交包含过大输入值的请求，Kibana在处理请求时会消耗过多的CPU和内存资源，导致Kibana对所有用户不可用，直到服务手动恢复。
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 ~ 8.19.15 -

II. Public POCs for CVE-2026-49094

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III. Intelligence Information for CVE-2026-49094

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Vendor Advisories for CVE-2026-49094 (1)

Same Patch Batch · Elastic · 2026-05-28 · 10 CVEs total

CVE-2026-42398 7.7 HIGH Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
CVE-2026-49095 7.2 HIGH Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
CVE-2026-33464 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-42399 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-42400 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-49093 6.3 MEDIUM Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
CVE-2026-33463 5.3 MEDIUM Operation on a Resource after Expiration or Termination in Kibana Leading to Unauthorized
CVE-2026-33462 4.6 MEDIUM Path Traversal in Kibana Leading to Unauthorized Deletion of User Accounts
CVE-2026-42401 4.1 MEDIUM Improper Neutralization of Input During Web Page Generation in Kibana Leading to Stored HT

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-49094

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