🛡️ CVE-2026-34359
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-346 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE CWE-346
Public Exploit ✅ No
Source NVD
Published 2026-03-30
Updated 2026-06-02
Modified 2026-03-31
Fix URL N/A

Affected Packages

Software From version Fixed in
ca.uhn.hapi.fhir:org.hl7.fhir.core — 6.9.4
ca.uhn.hapi.fhir:org.hl7.fhir.utilities — 6.9.4
hl7-fhir-core — 6.9.4

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