{"id":"CVE-2026-45367","title":"HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java","summary":"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 repl…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-1333"],"published":"2026-07-16","updated":"2026-07-18","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45367","references":[{"url":"https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24","label":"security-advisories@github.com"},{"url":"https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed","label":"security-advisories@github.com"},{"url":"https://github.com/hapifhir/org.hl7.fhir.core/pull/2403","label":"security-advisories@github.com"},{"url":"https://github.com/hapifhir/org.hl7.fhir.core/pull/2463","label":"security-advisories@github.com"},{"url":"https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7","label":"security-advisories@github.com"},{"url":"https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00684,"epssPercentile":0.5074,"ingestedAt":"2026-07-18T20:24:54.433Z","slug":"CVE-2026-45367","body":"## Overview\n\nHAPI 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}