CVE-2026-15643

HIGH 7.3

AWS HealthLake MCP Server SSRF via Pagination URL

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	aws
Product	awslabs.healthlake-mcp-server
Published	Jul 14, 2026
Last Updated	Jul 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

AWS / awslabs.healthlake-mcp-server

0 < 0.0.14

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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