{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "6.2.3"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "deef5d77f4f6a714579387c2d67a051396477415"
            },
            {
              "fixed": "1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75"
            }
          ],
          "repo": "https://github.com/mozilla/node-convict",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "This affects the package convict before 6.2.3. This is a bypass of [CVE-2022-22143](https://security.snyk.io/vuln/SNYK-JS-CONVICT-2340604). The [fix](https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880) introduced, relies on the startsWith method and does not prevent the vulnerability: before splitting the path, it checks if it starts with __proto__ or this.constructor.prototype. To bypass this check it's possible to prepend the dangerous paths with any string value followed by a dot, like for example foo.__proto__ or foo.this.constructor.prototype.",
  "id": "CVE-2022-21190",
  "modified": "2026-03-15T21:44:49.479674688Z",
  "published": "2022-05-13T20:15:08.013Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/mozilla/node-convict/blob/master/CHANGELOG.md%23623---2022-05-07"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mozilla/node-convict/blob/3b86be087d8f14681a9c889d45da7fe3ad9cd880/packages/convict/src/main.js%23L571"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mozilla/node-convict/commit/1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75"
    },
    {
      "type": "EVIDENCE",
      "url": "https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808"
    },
    {
      "type": "EVIDENCE",
      "url": "https://snyk.io/vuln/SNYK-JS-CONVICT-2774757"
    }
  ],
  "related": [
    "SNYK-JS-CONVICT-2774757"
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}