Security advisory

{
  "id": "3ad8d3d04d8438a052a11c42027a018347ce20478fefa72f4a7c17ae082919eb",
  "url": "https://osv.dev/vulnerability/CVE-2021-23807",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-23807",
    "summary": "This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.",
    "evidence": "osv:CVE-2021-23807",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-23807",
      "aliases": [
        "CVE-2021-23807",
        "GHSA-282f-qqgm-c34q"
      ],
      "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/janl/node-jsonpointer",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8dbf3046befe610cef2d16a3df5c4a30dda9b61d"
                },
                {
                  "fixed": "a0345f3550cd9c4d89f33b126390202b89510ad4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:janl:jsonpointer:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a0345f3550cd9c4d89f33b126390202b89510ad4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.1.0",
            "v1.1.0",
            "v1.0.0",
            "v4.0.1",
            "4.0.1",
            "4.0.0",
            "3.0.1",
            "3.0.0",
            "2.0.0",
            "1.1.0",
            "1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23807.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:32.771188202Z",
      "provider": "osv",
      "references": [
        "https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4",
        "https://github.com/janl/node-jsonpointer/pull/51",
        "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273",
        "https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-23807",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385547,
  "published_at": "2021-11-03T18:15:08.23+00:00"
}