{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-28500",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-18T14:08:46.596652Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-18T14:08:50.003Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "onnx",
          "vendor": "onnx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.20.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently exfiltrate sensitive files (SSH keys, cloud credentials) from the victim\u0027s machine the moment the model is loaded. As of time of publication, no known patched versions are available."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-494",
              "description": "CWE-494: Download of Code Without Integrity Check",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-693",
              "description": "CWE-693: Protection Mechanism Failure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-18T01:15:07.644Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m"
        },
        {
          "name": "https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md"
        }
      ],
      "source": {
        "advisory": "GHSA-hqmj-h5c6-369m",
        "discovery": "UNKNOWN"
      },
      "title": "ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() \u2014 Silent Supply-Chain Attack"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-28500",
    "datePublished": "2026-03-18T01:15:07.644Z",
    "dateReserved": "2026-02-27T20:57:47.708Z",
    "dateUpdated": "2026-03-18T14:08:50.003Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.20.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "onnx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.21.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-28500"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345",
      "CWE-494",
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-16T16:23:28Z",
    "nvd_published_at": "2026-03-18T02:16:24Z",
    "severity": "HIGH"
  },
  "details": "## What\u0027s the issue\nPassing `silent=True` to `onnx.hub.load()` kills all trust warnings and user prompts. This means a model can be downloaded from any unverified GitHub repo with zero user awareness.\n \n```python\nif not _verify_repo_ref(repo) and not silent:\n    # completely skipped when silent=True\n    print(\"The model repo... is not trusted\")\n    if input().lower() != \"y\":\n        return None\n```\n \nOn top of that, the SHA256 integrity check is useless here \u2014 it validates against a manifest that lives in the same repo the attacker controls, so the hash will always match.\n\n \n## Impact\nAny pipeline using `hub.load()` with `silent=True` and an external repo string is silently loading whatever the repo owner ships. If that model executes arbitrary code on load, the attacker has access to the machine.\n \n## Resolved by removing the feature \n## References\n \n- [Write-up](https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md)",
  "id": "GHSA-hqmj-h5c6-369m",
  "modified": "2026-04-06T23:11:55Z",
  "published": "2026-03-16T16:23:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28500"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/onnx/onnx"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() \u2014 Silent Supply-Chain Attack"
}