SmileCDR HAPI FHIR improper data decompression

{
  "id": "b0f868d9ce87ad9c1349cd60e4fbd1bc0190041c7dc15a2a1999e9d9fedcdc72",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-113873",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SmileCDR HAPI FHIR improper data decompression",
    "summary": "SmileCDR HAPI FHIR does not properly handle highly compressed data, allowing an unauthenticated attacker to send compressed payloads that exhaust server heap or crash certain services when decompressed.",
    "evidence": "cve:CVE-2026-113873",
    "products": [
      {
        "name": {
          "value": "HAPI FHIR",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-113873",
      "aliases": [
        "CVE-2026-113873"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 7.5,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        },
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 8.7,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE"
          }
        },
        {
          "other": {
            "type": "ssvc",
            "content": {
              "id": "CVE-2026-113873",
              "role": "CISA Coordinator",
              "options": [
                {
                  "Exploitation": "none"
                },
                {
                  "Automatable": "yes"
                },
                {
                  "Technical Impact": "partial"
                }
              ],
              "version": "2.0.3",
              "timestamp": "2026-10-06T16:13:10.943527Z"
            }
          }
        }
      ],
      "affected": [
        {
          "vendor": "SmileCDR",
          "product": "HAPI FHIR",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "*",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ],
      "modified": "2026-10-26T12:57:42.150Z",
      "provider": "cve",
      "references": [
        "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-294-01.json",
        "https://www.cve.org/CVERecord?id=CVE-2026-113873",
        "https://abhinavagarwal07.github.io/posts/hapi-fhir-authorization-findings/"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
          "shortName": "cisa-cg",
          "dateUpdated": "2026-10-26T12:57:42.150Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-113873",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 307231,
  "published_at": "2026-10-22T17:57:52.475+00:00"
}