{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf"
            },
            {
              "fixed": "2bb50465112feca9003e1ed654d77f01ff1415ca"
            }
          ],
          "repo": "https://github.com/onnx/onnx",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hwpq-hmq9-wj77"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44512.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.9.0"
          },
          {
            "fixed": "1.22.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "1.9.0"
          },
          {
            "fixed": "1.22.0"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.",
  "id": "CVE-2026-44512",
  "modified": "2026-08-05T03:30:23.564732110Z",
  "published": "2026-07-08T19:32:04.886Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/onnx/onnx/releases/tag/v1.22.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44512.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44512"
    },
    {
      "type": "FIX",
      "url": "https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf"
    },
    {
      "type": "FIX",
      "url": "https://github.com/onnx/onnx/pull/7813"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)"
}