Security advisory

{
  "id": "649962b91fc79ee61fa824304051cbe67417c3c234e9da119278f5f19b781530",
  "url": "https://osv.dev/vulnerability/CVE-2021-25943",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25943",
    "summary": "Prototype pollution vulnerability in '101' versions 1.0.0 through 1.6.3 allows an attacker to cause a denial of service and may lead to remote code execution.",
    "evidence": "osv:CVE-2021-25943",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-25943",
      "aliases": [
        "CVE-2021-25943",
        "GHSA-cwcx-rxgc-cmw3"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tjmehta/101",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b7d77466e70fc31169136aea8a944ee0101cfb0a"
                },
                {
                  "last_affected": "d87f63ce2a4cbdc476e8287abd78327c3144d646"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:101_project:101:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "1.6.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.6.3",
            "v1.6.2",
            "v1.6.1",
            "v1.6.0",
            "v1.5.0",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v1.2.0",
            "v1.1.1",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25943.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:40.364693117Z",
      "provider": "osv",
      "references": [
        "https://github.com/tjmehta/101/blob/d87f63ce2a4cbdc476e8287abd78327c3144d646/set.js#L52",
        "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25943"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-25943",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384479,
  "published_at": "2021-05-14T14:15:07.847+00:00"
}