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CVE-2026-49087— Allocation of Resources Without Limits or Throttling 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 9.0.0至9.3.3及之前版本和8.0.0至8.19.14及之前版本存在资源管理错误漏洞，该漏洞源于资源无限制分配，可能导致经过身份验证的用户通过提交特制批量删除请求造成过多资源消耗，进而导致拒绝服务。以下版本受到影响：9.0.0至9.3.3及之前版本和8.0.0至8.19.14及之前版本。

CVSS 6.5 · Medium EPSS 0.47% · P38

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
Elastic Kibana 9.0.0≤ 9.3.3 affected
8.0.0≤ 8.19.14 affected
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I. Basic Information for CVE-2026-49087

Vulnerability Information
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Vulnerability Title
Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted bulk deletion request that causes excessive resource consumption, which may render Kibana unavailable.
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
不加限制或调节的资源分配
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 9.0.0至9.3.3及之前版本和8.0.0至8.19.14及之前版本存在资源管理错误漏洞，该漏洞源于资源无限制分配，可能导致经过身份验证的用户通过提交特制批量删除请求造成过多资源消耗，进而导致拒绝服务。以下版本受到影响：9.0.0至9.3.3及之前版本和8.0.0至8.19.14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 9.0.0 ~ 9.3.3 -

II. Public POCs for CVE-2026-49087

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III. Intelligence Information for CVE-2026-49087

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Vendor Advisories for CVE-2026-49087 (1)

Same Patch Batch · Elastic · 2026-07-01 · 9 CVEs total

CVE-2026-49091 8.0 HIGH Improper Output Neutralization for Logs in Kibana Leading to Log Injection
CVE-2026-49090 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-56150 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of
CVE-2026-56148 6.5 MEDIUM Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
CVE-2026-56151 6.5 MEDIUM Improper Input Validation in Kibana Leading to Denial of Service
CVE-2026-56152 5.3 MEDIUM Incorrect Authorization in Kibana Leading to Information Disclosure
CVE-2026-56149 4.9 MEDIUM Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of
CVE-2026-49088 4.4 MEDIUM Insertion of Sensitive Information into Log File in Kibana Leading to Information Disclosu

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-770

V. Comments for CVE-2026-49087

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