CVE-2026-4224 affecting package python-py 1.11.0-1

{
  "id": "100baeb3be21cd6f28124fb170e273024434dfaf9dee1192e59f97300227b287",
  "url": "https://osv.dev/vulnerability/AZL-109707",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-4224 affecting package python-py 1.11.0-1",
    "summary": "When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.",
    "evidence": "osv:AZL-109707",
    "products": [
      {
        "name": {
          "value": "python-py",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-109707",
      "aliases": [
        "AZL-109707"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "1.11.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-py",
            "purl": "pkg:rpm/azure-linux/python-py",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109707.json"
          }
        }
      ],
      "modified": "2026-10-27T05:36:16Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-4224"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-4224"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-4224",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 460532,
  "published_at": "2026-03-16T18:16:10+00:00"
}