{"cve":"CVE-2026-45367","nvd":{"published":"2026-07-16T17:16:56.293","modified":"2026-10-24T20:10:00.137","status":"Awaiting Analysis","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-1333"],"references":["https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24","https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed","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"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-45367","score":0.00684,"percentile":0.52296,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-3653-68v6-rq57","url":"https://osv.dev/vulnerability/GHSA-3653-68v6-rq57","summary":"HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint","modified":"2026-09-10T03:51:04.763323789Z","packages":[{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.dstu2","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.dstu2","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.dstu2016may","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.dstu3","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.dstu3","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.r4","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.r4","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.r4b","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.r4b","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.r5","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.r5","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.validation","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.validation","ranges":["<6.9.7"],"fixed":["6.9.7"]},{"ecosystem":"Maven","name":"ca.uhn.hapi.fhir:org.hl7.fhir.validation.cli","purl":"pkg:maven/ca.uhn.hapi.fhir/org.hl7.fhir.validation.cli","ranges":["<6.9.7"],"fixed":["6.9.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}