CVE•Published 2026-03-31•Modified 2026-07-24•1 article on news•5 live references•NVD data

CVE-2026-34361Hapifhir · Hl7_fhir_core

Vulnerability data via NVD (ingested)

CVSS v3.1

9.3

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 78% of all CVEs

Weaknesses (CWE)

CWE-552Files or Directories Accessible to External Parties

Description

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.

Timeline

Published 2026-03-31

Modified 2026-07-24

External references

NVD MITRE Exploit-DB trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34361

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Hapifhir Hl7 Fhir Core"

All exposed Hapifhir Hl7 Fhir Core instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Hl7 Fhir Core"

HTTP body or banner mentions "Hl7 Fhir Core" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34361