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CVE-2026-75897— Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards

Quick assessment

Affected
OpenSearch OpenSearch Dashboards
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.

OpenSearch Dashboards是OpenSearch组织的一款数据可视化仪表板工具。 OpenSearch Dashboards 1.3版本至3.7.0版本存在输入验证错误漏洞，该漏洞源于capabilities路由处理程序输入验证不当，未限制请求负载大小，可能导致远程攻击者通过特制的HTTP请求造成拒绝服务。

CVSS 7.5 · High EPSS 0.50% · P41

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
AWS Amazon OpenSearch Service 1.3≤ 3.5 affected
OpenSearch OpenSearch Dashboards 1.3≤ 3.7.0 affected
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I. Basic Information for CVE-2026-75897

Vulnerability Information
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Vulnerability Title
Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards
Source: CVE Program / CVE List V5
Vulnerability Description
Improper input validation in the capabilities route handler in OpenSearch Dashboards - the size of the request payload is not bounded - might allow remote attackers to cause a denial of service via a crafted HTTP request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSearch Dashboards 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSearch Dashboards是OpenSearch组织的一款数据可视化仪表板工具。 OpenSearch Dashboards 1.3版本至3.7.0版本存在输入验证错误漏洞，该漏洞源于capabilities路由处理程序输入验证不当，未限制请求负载大小，可能导致远程攻击者通过特制的HTTP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
OpenSearch OpenSearch Dashboards 1.3 ~ 3.7.0 -
AWS Amazon OpenSearch Service 1.3 ~ 3.5 -

II. Public POCs for CVE-2026-75897

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III. Intelligence Information for CVE-2026-75897

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Vendor Advisories for CVE-2026-75897 (1)

IV. Related Vulnerabilities

Same vendor: OpenSearch
Same weakness: CWE-1284

V. Comments for CVE-2026-75897

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