Security advisory

{
  "id": "318b9d6caaf6521b1fa30a7b2ca5027b32ff91331a456556ecb12f4a634526dd",
  "url": "https://osv.dev/vulnerability/CVE-2020-7644",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-7644",
    "summary": "fun-map through 3.3.1 is vulnerable to Prototype Pollution. The function assocInM could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.",
    "evidence": "osv:CVE-2020-7644",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-7644",
      "aliases": [
        "CVE-2020-7644",
        "GHSA-p33m-7w7f-gmj8",
        "SNYK-JS-FUNMAP-564436"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nathan7/fun-map",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "b633ee4ad50541c5e8c2506b45ad9be293142b64"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:fun-map_project:fun-map:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.3.1",
            "v3.3.0",
            "v3.2.1",
            "v3.2.0",
            "v3.1.1",
            "v3.1.0",
            "v3.0.1",
            "v3.0.0",
            "v2.0.1",
            "v2.0.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7644.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:30.643041163Z",
      "provider": "osv",
      "references": [
        "https://github.com/nathan7/fun-map/blob/master/index.js#L137%2C",
        "https://snyk.io/vuln/SNYK-JS-FUNMAP-564436"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-7644",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384383,
  "published_at": "2020-04-28T19:15:12.423+00:00"
}