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Vulnerabilities CVE-2026-15643

CVE-2026-15643

Critical
Open
TLP:CLEAR

AWS HealthLake MCP Server SSRF via Pagination URL

NVD CVE.org
Critical Infrastructure

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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.

Details

CVSS Score
9.2
EPSS Score
0.22%

12.6th percentile

CVSS Vector
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
Confidence
90%
Published
Jul 14, 2026
Last Modified
Jul 15, 2026
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