CVE-2026-15643

AWS HealthLake MCP Server SSRF via Pagination URL

State: Published
Severity: 9.2 Critical
Published: Jul 14, 2026
Updated: Jul 15, 2026
Reserved: Jul 13, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N	AMZN
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N	AMZN

Weaknesses

CWE-918 Server-Side request forgery (SSRF)

Affected Products

Product	Versions
awslabs.healthlake-mcp-serverAWS	before 0.0.14Affected

References

https://pypi.org/project/awslabs.healthlake-mcp-server/0.0.14/release-notes
https://aws.amazon.com/security/security-bulletins/2026-054-aws/vendor-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.