{
  "schema_version": "1.4.0",
  "id": "GHSA-4vjr-hfpp-2m7w",
  "modified": "2025-04-04T18:24:05Z",
  "published": "2025-04-04T06:34:23Z",
  "aliases": [
    "CVE-2025-3197"
  ],
  "summary": "expand-object Vulnerable to Prototype Pollution via the expand() Function",
  "details": "Versions of the package expand-object from 0.0.0 to 0.4.2 are vulnerable to Prototype Pollution in the expand() function in index.js. This function expands the given string into an object and allows a nested property to be set without checking the provided keys for sensitive properties like __proto__.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
    },
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "expand-object"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.4.2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3197"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/miguelafmonteiro/d8f66af61d14e06338b688f90c4dfa7c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jonschlinkert/expand-object"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jonschlinkert/expand-object/blob/master/index.js#L13"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-EXPANDOBJECT-5821390"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1321"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-04T18:24:05Z",
    "nvd_published_at": "2025-04-04T05:15:46Z"
  }
}