CVE-2026-62293: CWE-20: Improper Input Validation in hapifhir org.hl7.fhir.core
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.11, the hidden scan command concatenates attacker-controlled Implementation Guide titles, profile titles, and source references into scan.html without escaping in Scanner.java. As a result, a user who scans an attacker-supplied IG/profile and then opens or publishes the generated local/CI HTML report can trigger stored cross-site scripting, executing attacker-controlled JavaScript in the report's browser context. This issue is fixed in version 6.9.11.
AI Analysis
Technical Summary
The vulnerability in HAPI FHIR's org.hl7.fhir.core component involves improper input validation (CWE-20) leading to stored cross-site scripting (CWE-79). Specifically, in versions before 6.9.11, the hidden scan command concatenates unescaped attacker-controlled data into scan.html, enabling execution of malicious JavaScript when the report is viewed. This flaw is addressed by escaping input in version 6.9.11.
Potential Impact
An attacker who supplies malicious Implementation Guide or profile data can cause stored XSS in the generated scan.html report. This can lead to execution of arbitrary JavaScript in the context of the user viewing the report, potentially compromising user data or session integrity. The CVSS score of 5.0 (medium) reflects limited attack vector (local) and user interaction required.
Mitigation Recommendations
Upgrade to HAPI FHIR version 6.9.11 or later where the vulnerability is fixed by proper escaping of attacker-controlled input in the scan.html report generation. No other mitigation or workaround is indicated.
CVE-2026-62293: CWE-20: Improper Input Validation in hapifhir org.hl7.fhir.core
Description
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.11, the hidden scan command concatenates attacker-controlled Implementation Guide titles, profile titles, and source references into scan.html without escaping in Scanner.java. As a result, a user who scans an attacker-supplied IG/profile and then opens or publishes the generated local/CI HTML report can trigger stored cross-site scripting, executing attacker-controlled JavaScript in the report's browser context. This issue is fixed in version 6.9.11.
CVSS v3.1
Score 5.0medium
Affected software
hapifhir
org.hl7.fhir.core
hapifhir
ca.uhn.hapi.fhir:org.hl7.fhir.validation
hapifhir
ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in HAPI FHIR's org.hl7.fhir.core component involves improper input validation (CWE-20) leading to stored cross-site scripting (CWE-79). Specifically, in versions before 6.9.11, the hidden scan command concatenates unescaped attacker-controlled data into scan.html, enabling execution of malicious JavaScript when the report is viewed. This flaw is addressed by escaping input in version 6.9.11.
Potential Impact
An attacker who supplies malicious Implementation Guide or profile data can cause stored XSS in the generated scan.html report. This can lead to execution of arbitrary JavaScript in the context of the user viewing the report, potentially compromising user data or session integrity. The CVSS score of 5.0 (medium) reflects limited attack vector (local) and user interaction required.
Mitigation Recommendations
Upgrade to HAPI FHIR version 6.9.11 or later where the vulnerability is fixed by proper escaping of attacker-controlled input in the scan.html report generation. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-13T18:37:08.488Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a76350bbf8831d5390b01af
Added to database: 08/07/2026, 19:42:03 UTC
Last enriched: 08/07/2026, 20:00:07 UTC
Last updated: 09/22/2026, 01:52:44 UTC
Views: 58
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