Security advisory

{
  "id": "49b4f7dc190d553704b111a88f05f0e897853f63740eebd4cf2b9a2532b35079",
  "url": "https://osv.dev/vulnerability/CVE-2021-23470",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-23470",
    "summary": "This affects the package putil-merge before 3.8.0. The merge() function does not check the values passed into the argument. An attacker can supply a malicious value by adjusting the value to include the constructor property. Note: This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-PUTILMERGE-1317077",
    "evidence": "osv:CVE-2021-23470",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-23470",
      "aliases": [
        "CVE-2021-23470",
        "GHSA-4g77-cvgw-grvw",
        "SNYK-JS-PUTILMERGE-2391487"
      ],
      "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/panates/putil-merge",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "476d00078dfb2827d7c9ee0f2392c81b864f7bc5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "476d00078dfb2827d7c9ee0f2392c81b864f7bc5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23470.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:32.543962364Z",
      "provider": "osv",
      "references": [
        "https://github.com/panates/putil-merge/commit/476d00078dfb2827d7c9ee0f2392c81b864f7bc5",
        "https://snyk.io/vuln/SNYK-JS-PUTILMERGE-2391487"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:putil-merge_project:putil-merge:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "putil-merge_project:putil-merge",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "3.8.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "3.8.0"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-23470",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385524,
  "published_at": "2022-02-04T20:15:08.363+00:00"
}