Security advisory

{
  "id": "01602f23e859aa06f5e39f8aed4bf6e9d925ec6df78bf6d850a3db58a6efbf4f",
  "url": "https://osv.dev/vulnerability/CVE-2018-3719",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-3719",
    "summary": "mixin-deep node module before 1.3.1 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of \"Object\" via __proto__, causing the addition or modification of an existing property that will exist on all objects.",
    "evidence": "osv:CVE-2018-3719",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-3719",
      "aliases": [
        "CVE-2018-3719",
        "GHSA-3mpr-hq3p-49h9"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jonschlinkert/mixin-deep",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a4bcf3ef9cdc144c4c39ff8f1e1f566f338c477e"
                },
                {
                  "fixed": "578b0bc5e74e14de9ef4975f504dc698796bdf9c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mixin-deep_project:mixin-deep:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "578b0bc5e74e14de9ef4975f504dc698796bdf9c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.3.0",
            "1.2.0",
            "1.1.3",
            "1.1.2",
            "1.1.0",
            "1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-3719.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:27.274242999Z",
      "provider": "osv",
      "references": [
        "https://github.com/jonschlinkert/mixin-deep/commit/578b0bc5e74e14de9ef4975f504dc698796bdf9c",
        "https://hackerone.com/reports/311236"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-3719",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381723,
  "published_at": "2018-06-07T02:29:08.223+00:00"
}