CVEvulnerability

CVE-2026-34360

5.8 MEDIUM Published 2026-03-31 Modified 2026-07-24 Official page ↗
Status
Analyzed
Published
2026-03-31
Last modified
2026-07-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Weaknesses
CWE-918

Description

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.4, the /loadIG HTTP endpoint in the FHIR Validator HTTP service accepts a user-supplied URL via JSON body and makes server-side HTTP requests to it without any hostname, scheme, or domain validation. An unauthenticated attacker with network access to the validator can probe internal network services, cloud metadata endpoints, and map network topology through error-based information leakage. With explore=true (the default for this code path), each request triggers multiple outbound HTTP calls, amplifying reconnaissance capability. This issue has been patched in version 6.9.4.

Affected configurations

• hapifhir hl7 fhir core (< 6.9.4)

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References