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

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

CVE-2026-45367Published 4 months agoUpdated 5 days agoSource: OSV

Affected packages

  • ca.uhn.hapi.fhir:org.hl7.fhir.dstu2— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.dstu3— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.r4— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.r4b— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.r5— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.validation— before 6.9.7
  • ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli— before 6.9.7

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
—
EPSS percentile
—

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

Sources

Structured record: https://osv.dev/vulnerability/GHSA-3653-68v6-rq57

Recommended response stack

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