CVE-2026-34360 | hapifhir org.hl7.fhir.core up to 6.9.3 HTTP Endpoint /loadIG server-side request forgery (GHSA-3ww8-jw56-9f5h)

VDB-354461 · CVE-2026-34360 · GHSA-3ww8-jw56-9f5h hapifhir org.hl7.fhir.core up to 6.9.3 HTTP Endpoint /loadIG server-side request forgery HistoryDiffrelatejsonxmlCTI CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system. Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack. CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability. 5.4 $0-$5k 1.48+ Summaryinfo A vulnerability identified as critical has been detected in hapifhir org.hl7.fhir.core up to 6.9.3. This affects an unknown function of the file /loadIG of the component HTTP Endpoint. The manipulation leads to server-side request forgery. This vulnerability is documented as CVE-2026-34360. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability was found in hapifhir org.hl7.fhir.core up to 6.9.3 and classified as critical. This issue affects some unknown functionality of the file /loadIG of the component HTTP Endpoint. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. The summary by CVE is: 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. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-34360 since 03/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. Upgrading to version 6.9.4 eliminates this vulnerability. Productinfo Vendor hapifhir Name org.hl7.fhir.core Version 6.9.0 6.9.1 6.9.2 6.9.3 Website Product: https://github.com/hapifhir/org.hl7.fhir.core/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.5 VulDB Meta Temp Score: 5.4 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.8 CNA Vector (GitHub_M): 🔒 CVSSv2info AV AC Au C I A 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 💳 Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Server-side request forgery CWE: CWE-918 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: org.hl7.fhir.core 6.9.4 Timelineinfo 03/27/2026 CVE reserved 03/31/2026 +3 days Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-3ww8-jw56-9f5h Status: Confirmed CVE: CVE-2026-34360 (🔒) GCVE (CVE): GCVE-0-2026-34360 GCVE (VulDB): GCVE-100-354461 Entryinfo Created: 03/31/2026 20:05 Changes: 03/31/2026 20:05 (66) Complete: 🔍 Cache ID: 99:8DB:101 Discussion No comments yet. 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