{"id":"CVE-2026-45367","summary":"HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint","details":"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.","aliases":["GHSA-3653-68v6-rq57"],"modified":"2026-07-19T03:30:51.443967321Z","published":"2026-07-16T16:52:04.901Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-1333"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45367.json"},"references":[{"type":"WEB","url":"https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45367.json"},{"type":"ADVISORY","url":"https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45367"},{"type":"FIX","url":"https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24"},{"type":"FIX","url":"https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed"},{"type":"FIX","url":"https://github.com/hapifhir/org.hl7.fhir.core/pull/2403"},{"type":"FIX","url":"https://github.com/hapifhir/org.hl7.fhir.core/pull/2463"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hapifhir/org.hl7.fhir.core","events":[{"introduced":"0"},{"fixed":"275d015c680ce9f90cbe285596e50118e472bf24"},{"fixed":"e08982d2b6f6dcd6c670a762d9cf999179fbe4ed"},{"fixed":"1ab4fece6bbed67a32eb40ffd328bbcc517e1b90"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"6.9.7"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["6.9.8","6.9.4","6.9.7","6.9.6","6.9.5","6.9.3","6.9.2","6.9.1","6.9.0","6.8.1","6.8.2","6.7.11"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45367.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}