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NVD CRITICAL: CVE-2026-34359 — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare i...

Tuesday, March 31, 2026 at 05:16 PM UTC·Source: NIST NVD

Updated: Friday, April 3, 2026 at 01:53 PM UTC

Executive Summary

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.4, ManagedWebAccessUtils.getServer() uses String.startsWith() to match request URLs against configured server URLs for authentication credential dispatch. Because configured server URLs (e.g., http://tx.fhir.org) lack a trailing slash or host boundary check, an attacker-con

Analysis

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.4, ManagedWebAccessUtils.getServer() uses String.startsWith() to match request URLs against configured server URLs for authentication credential dispatch. Because configured server URLs (e.g., http://tx.fhir.org) lack a trailing slash or host boundary check, an attacker-controlled domain like http://tx.fhir.org.attacker.com matches the prefix and receives Bearer tokens, Basic auth credentials, or API keys when the HTTP client follows a redirect to that domain. This issue has been patched in version 6.9.4. CVSS Score: 7.4. Published: 2026-03-31T17:16:31.937.

Indicators of Compromise (5)

CVE (1)
CVE-2026-34359
NVDMITRE CVE
URL (2)
http://tx.fhir.org)
VirusTotalURLhaus
http://tx.fhir.org.attacker.com
VirusTotalURLhaus
Domain (2)
tx.fhir.org
VirusTotalURLhaus
tx.fhir.org.attacker.com
VirusTotalURLhaus
Source Attribution

Originally published by NIST NVD on Mar 31, 2026. Verified by: NIST.

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