CVE-2026-34361— HAPI FHIR: Unauthenticated SSRF via /loadIG Chains with startsWith() Credential Leak for Authentication Token Theft
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I. Basic Information for CVE-2026-34361
Vulnerability Information
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Vulnerability Title
HAPI FHIR: Unauthenticated SSRF via /loadIG Chains with startsWith() Credential Leak for Authentication Token Theft
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对外部实体的文件或目录可访问
Source: NVD (National Vulnerability Database)
Vulnerability Title
HAPI FHIR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HAPI FHIR是HAPI FHIR开源的一个Java编写的 HL7 FHIR API。 HAPI FHIR 6.9.4之前版本存在安全漏洞，该漏洞源于FHIR Validator HTTP服务暴露了未经身份验证的/loadIG端点，且凭证提供程序存在URL前缀匹配缺陷，可能导致身份验证令牌被盗。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| hapifhir | org.hl7.fhir.core | < 6.9.4 | - |
II. Public POCs for CVE-2026-34361
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · hapifhir · 2026-03-31 · 3 CVEs total
| CVE-2026-34359 | 7.4 HIGH | HAPI FHIR: Authentication Credential Leakage via Improper URL Prefix Matching on HTTP Redi |
| CVE-2026-34360 | 5.8 MEDIUM | HAPI FHIR: Unauthenticated Blind SSRF via /loadIG Endpoint Enables Internal Network Probin |
IV. Related Vulnerabilities
Same product: org.hl7.fhir.core
- CVE-2026-34360
HAPI FHIR: Unauthenticated Blind SSRF via /loadIG Endpoint E - CVE-2026-34359
HAPI FHIR: Authentication Credential Leakage via Improper UR - CVE-2026-33180
HAPI FHIR HTTP authentication leak in redirects - CVE-2024-52007
XXE vulnerability in XSLT parsing in `org.hl7.fhir.core` - CVE-2024-45294
`org.hl7.fhir.core` XXE vulnerability in XSLT transforms
Same vendor: hapifhir
- CVE-2026-34360
HAPI FHIR: Unauthenticated Blind SSRF via /loadIG Endpoint E - CVE-2026-34359
HAPI FHIR: Authentication Credential Leakage via Improper UR - CVE-2026-33180
HAPI FHIR HTTP authentication leak in redirects - CVE-2024-52007
XXE vulnerability in XSLT parsing in `org.hl7.fhir.core` - CVE-2024-45294
`org.hl7.fhir.core` XXE vulnerability in XSLT transforms
Same weakness: CWE-552
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Unauthorized Arbitrary File Read via RMI in AdminServer Inte - CVE-2019-25709
CF Image Hosting Script 1.6.5 Unauthorized Database Access - CVE-2026-33698
Chamilo LMS affected by unauthenticated RCE in main/install - CVE-2021-47960
Synology SSL VPN Client 安全漏洞 - CVE-2026-35446
LORIS has a path traversal in FilesDownloadHandler
V. Comments for CVE-2026-34361
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