{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7c54b99408e6e9cd6533b7245bf197dadc2a2dbc"
            }
          ],
          "repo": "https://github.com/kaspernj/form-data-objectizer",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m2hg-wjq3-28wq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1321"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46510.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "1.0.1"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "form-data-objectizer converts FormData to object. Prior to 1.0.1, form-data-objectizer walks bracket-notation form keys (e.g. name[sub]) into nested objects without filtering __proto__, constructor, or prototype. A single HTTP form field whose name starts with __proto__[...] causes the library to mutate Object.prototype, which is a prototype pollution primitive of the entire Node.js process. This vulnerability is fixed in 1.0.1.",
  "id": "CVE-2026-46510",
  "modified": "2026-07-15T01:49:21.028895440Z",
  "published": "2026-05-29T13:40:22.772Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46510.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/kaspernj/form-data-objectizer/security/advisories/GHSA-m2hg-wjq3-28wq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46510"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kaspernj/form-data-objectizer/commit/7c54b99408e6e9cd6533b7245bf197dadc2a2dbc"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Prototype pollution in form-data-objectizer via bracket-notation form keys"
}