CVE-2026-45367

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,...

HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint

All implementations of FHIRPathEngine accept arbitrary FHIRPath expressions and evaluate them without input validation. The FHIRPath functions matches, matchesFull, and replaceMatches pass user-controlled regular expressions directly to Java's Pattern.compile and String.replaceAll without...