CVE-2026-34360 identifies a Server-Side Request Forgery (SSRF) vulnerability in the HAPI FHIR Validator HTTP service, affecting versions prior to 6.9.4. An unauthenticated attacker with network access can exploit the /loadIG endpoint to probe internal network services, cloud metadata endpoints, and map network topology through error-based information leakage. This medium-severity vulnerability (CVSS 5.8) has low attack complexity, as it requires no authentication or user interaction, and multiple outbound calls amplify reconnaissance capabilities. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.9.4CPE matchmatch criteria | cpe:2.3:a:hapifhir:hl7_fhir_core:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
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