# CVE-2026-15643: AWS HealthLake MCP Server SSRF via Pagination URL

> CVE-2026-15643: AWS HealthLake MCP Server SSRF via Pagination URL. CVSS 7.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-15643
Last updated: 2026-10-24T21:10:00Z

- Published: 2026-07-14 20:03 UTC · Updated: 2026-10-24 21:10 UTC · Assigner: AMZN
- CVSS: 7.3 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- EPSS: 0.39%, 33th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-918

## Description

AWS HealthLake MCP Server (awslabs.healthlake-mcp-server) is a Model Context Protocol server that enables AI assistants to interact with AWS HealthLake FHIR datastores. A server-side request forgery in the pagination handling component in AWS awslabs.healthlake-mcp-server before 0.0.14 on all platforms might allow a remote authenticated user to exfiltrate AWS temporary security credentials to an arbitrary endpoint via a crafted next\_token parameter. The server does not validate that pagination URLs point back to the expected HealthLake endpoint, allowing an actor to redirect subsequent requests to an actor-controlled server. Its recommended to upgrade to version 0.0.14 or later.

## Affected vendors and products

- AWS: awslabs.healthlake-mcp-server

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-15643)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-15643)
- [https://aws.amazon.com/security/security-bulletins/2026-054-aws/](https://aws.amazon.com/security/security-bulletins/2026-054-aws/)
- [https://pypi.org/project/awslabs.healthlake-mcp-server/0.0.14/](https://pypi.org/project/awslabs.healthlake-mcp-server/0.0.14/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-15643 · Markdown: https://rewindex.com/cve/CVE-2026-15643.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-15643 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:42.917Z