CVE-2026-45367 (GCVE-0-2026-45367)

Vulnerability from cvelistv5 – Published: 2026-07-16 16:52 – Updated: 2026-07-16 16:52
VLAI
Title
HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint
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 replaceMatches() to Java regex operations without effective timeouts, allowing catastrophic backtracking and denial of service. This issue is fixed in version 6.9.7.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "org.hl7.fhir.core",
          "vendor": "hapifhir",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.9.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333: Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-16T16:52:04.901Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57"
        },
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/pull/2403",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/pull/2403"
        },
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/pull/2463",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/pull/2463"
        },
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24"
        },
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed"
        },
        {
          "name": "https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7"
        }
      ],
      "source": {
        "advisory": "GHSA-3653-68v6-rq57",
        "discovery": "UNKNOWN"
      },
      "title": "HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45367",
    "datePublished": "2026-07-16T16:52:04.901Z",
    "dateReserved": "2026-05-12T00:51:29.085Z",
    "dateUpdated": "2026-07-16T16:52:04.901Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-45367",
      "date": "2026-06-14",
      "epss": "0.00086",
      "percentile": "0.24933"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45367\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-16T17:16:56.293\",\"lastModified\":\"2026-07-16T17:42:46.100\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"hapifhir\",\"product\":\"org.hl7.fhir.core\",\"versions\":[{\"version\":\"\u003c 6.9.7\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1333\"}]}],\"references\":[{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/pull/2403\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/pull/2463\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}



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