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    CVE-2026-34361

    HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.4, the FHIR Validator HTTP service exposes an unauthenticated "/loadIG" endpoint that makes outbound HTTP requests to attacker-controlled URLs. Combined with a startsWith() URL prefix matching flaw in the credential provider (ManagedWebAccessUtils.getServer()), an attacker can steal authentication tokens (Bearer, Basic, API keys) configured for legitimate FHIR servers by registering a domain that prefix-matches a configured server URL. This issue has been patched in version 6.9.4.

    Published:Mar 31, 2026
    Last Modified:Apr 3, 2026
    EPS:Mar 31, 2026
    EPSS Score:0.00038
    CVSS Score:9.3

    Affected Products

    Vendor
    Hapifhir
    Product
    Hl7 Fhir Core

    Exploits

    https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-vr79-8m62-wh98

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-150 Collect Data from Common Resource Locations
    CAPEC-639 Probe System Files

    Related CVEs

    CVE-2026-62296 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-62295 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-62293 (CVSS 5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-49485 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-45367 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-55471 (CVSS 8.7) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-55470 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-34360 (CVSS 5.8) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-34359 (CVSS 7.4) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…
    CVE-2026-33180 (CVSS 7.5) — HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High