Vulnerability Description
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.7, the FHIRPathEngine implementation passes user-controlled regular expressions from matches(), matchesFull(), and replaceMatches() to Java regex operations without effective timeouts, allowing catastrophic backtracking and denial of service. This issue is fixed in version 6.9.7.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e
- https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9c
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2403
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2463
- https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6
FAQ
What is CVE-2026-45367?
CVE-2026-45367 is a vulnerability with a CVSS score of 7.5 (HIGH). HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.7, the FHIRPathEngine implementation passes user-controlled regular expressions fr...
How severe is CVE-2026-45367?
CVE-2026-45367 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45367?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.