{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "6.9.7"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "275d015c680ce9f90cbe285596e50118e472bf24"
            },
            {
              "fixed": "e08982d2b6f6dcd6c670a762d9cf999179fbe4ed"
            },
            {
              "fixed": "1ab4fece6bbed67a32eb40ffd328bbcc517e1b90"
            }
          ],
          "repo": "https://github.com/hapifhir/org.hl7.fhir.core",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3653-68v6-rq57"
  ],
  "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"
  },
  "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.",
  "id": "CVE-2026-45367",
  "modified": "2026-07-19T03:30:51.443967321Z",
  "published": "2026-07-16T16:52:04.901Z",
  "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"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint"
}