What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-14 · updated 2026-10-24
• Weakness: 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 products

• awslabs.healthlake-mcp-server: before 0.0.14 — fixed in 0.0.14

How to fix

Upgrade to a fixed version: awslabs.healthlake-mcp-server 0.0.14. Check the vendor advisory for mitigations.

References

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

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