Security advisory

{
  "id": "e1bcd3d7a004adbb0b31d25945500e3561ada0377bb008021e132ebdb8b948a3",
  "url": "https://osv.dev/vulnerability/CVE-2019-20149",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20149",
    "summary": "ctorName in index.js in kind-of v6.0.2 allows external user input to overwrite certain internal attributes via a conflicting name, as demonstrated by 'constructor': {'name':'Symbol'}. Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.",
    "evidence": "osv:CVE-2019-20149",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-20149",
      "aliases": [
        "CVE-2019-20149",
        "GHSA-6c8f-qphg-qjgp"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jonschlinkert/kind-of",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0b4ababf3a8505f60055487415a2dfe678a10b53"
                },
                {
                  "last_affected": "0b4ababf3a8505f60055487415a2dfe678a10b53"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:kind-of_project:kind-of:6.0.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.0.2"
                      },
                      {
                        "last_affected": "6.0.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20149.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:39.153201183Z",
      "provider": "osv",
      "references": [
        "https://github.com/jonschlinkert/kind-of/issues/30",
        "https://github.com/jonschlinkert/kind-of/pull/31"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-20149",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383714,
  "published_at": "2019-12-30T19:15:11.91+00:00"
}