CVE-2026-62293: Hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation

Medium severity, CVSS 5.0. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation: before 6.9.11 (fixed in 6.9.11)
• Hapifhir ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli: before 6.9.11 (fixed in 6.9.11)
• Hapifhir org.hl7.fhir.core: before 6.9.11 (fixed in 6.9.11)

Published 2026-08-07. Last modified 2026-09-09.