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CVE-2026-64686— OpenSearch Dashboards: SSRF in fetchDataSourceMetaData — missing endpoint validation

Quick assessment

Affected
opensearch-project 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 是一款专为配合 OpenSearch 使用的开源数据可视化工具。在版本 2.14.0 至 2.19.6 之前，以及 3.0.0 至 3.7.0 之前，OpenSearch Dashboards 的 路由中存在一个服务器端请求伪造（SSRF）漏洞。其同级的 路由会通过 函数，依据配置的 和 列表对传入的端点 URL 进行验证；但 路由虽然接受相同格式的用户输入，却未执行此类验证。因此，已认证用户可提交指向内部网络或回环地址（loopback）的端点，从而探测内部网络资源。该

CVSS 5.0 · Medium
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I. Basic Information for CVE-2026-64686

Vulnerability Information
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Vulnerability Title
OpenSearch Dashboards: SSRF in fetchDataSourceMetaData — missing endpoint validation
Source: CVE Program / CVE List V5
Vulnerability Description
OpenSearch Dashboards is an open-source data visualization tool designed to work with OpenSearch. From versions 2.14.0 to before 2.19.6, and 3.0.0 to before 3.7.0, a Server-Side Request Forgery (SSRF) vulnerability in OpenSearch Dashboards exists in the fetchDataSourceMetaData route. The sibling test_connection route validates incoming endpoint URLs via isValidURL() against configured endpointDeniedIPs and endpointAllowlistedSuffixes lists, but fetchDataSourceMetaData accepts the same input shape without performing this validation. An authenticated user can supply an internal or loopback endpoint to probe internal network resources. This issue has been patched in versions 2.19.6 and 3.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
opensearch-project OpenSearch-Dashboards >= 2.14.0, < 2.19.6 -

II. Public POCs for CVE-2026-64686

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III. Intelligence Information for CVE-2026-64686

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Other References for CVE-2026-64686 (3)

IV. Related Vulnerabilities

Same vendor: opensearch-project
Same weakness: CWE-918