CVE-2026-15643

High

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.

SeverityHigh
CVSS7.3
Exploit probability—
ProductAwslabs.healthlake-mcp-server
PublishedJul 14, 2026
First seenJul 14, 2026

How to fix

Affected products

ProductAffected versionsFixed in
AWS awslabs.healthlake-mcp-serverv < 0.0.140.0.14

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CVE-2026-15643 · Awslabs.healthlake-mcp-server · Dark Radar