Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hapifhir | Hl7 Fhir Core | < 6.9.4 |
Related Weaknesses (CWE)
References
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fgv2-4q4gExploitVendor Advisory
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-fgv2-4q4gExploitVendor Advisory
FAQ
What is CVE-2026-34359?
CVE-2026-34359 is a vulnerability with a CVSS score of 7.4 (HIGH). 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 req...
How severe is CVE-2026-34359?
CVE-2026-34359 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34359?
Check the references section above for vendor advisories and patch information. Affected products include: Hapifhir Hl7 Fhir Core.