Security advisory

{
  "id": "c2b635187c90907cb0c9ecb8799e756098cebe837126df148b6e72042c274be8",
  "url": "https://osv.dev/vulnerability/CVE-2021-23433",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-23433",
    "summary": "The package algoliasearch-helper before 3.6.2 are vulnerable to Prototype Pollution due to use of the merge function in src/SearchParameters/index.jsSearchParameters._parseNumbers without any protection against prototype properties. Note that this vulnerability is only exploitable if the implementation allows users to define arbitrary search patterns.",
    "evidence": "osv:CVE-2021-23433",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-23433",
      "aliases": [
        "CVE-2021-23433",
        "GHSA-vpf5-82c8-9v36",
        "SNYK-JS-ALGOLIASEARCHHELPER-1570421"
      ],
      "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/algolia/algoliasearch-helper-js",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0da37cc540275a7500db246155a8d783b45b514e"
                },
                {
                  "fixed": "4ff542b70b92a6b81cce8b9255700b0bc0817edd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:algolia:algoliasearch-helper:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.6.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4ff542b70b92a6b81cce8b9255700b0bc0817edd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.6.1",
            "3.6.0",
            "3.5.5",
            "3.5.4",
            "3.5.3",
            "3.5.2",
            "3.5.1",
            "3.5.0",
            "3.4.5",
            "3.4.4",
            "3.4.3",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.4",
            "3.3.3",
            "3.3.2",
            "3.3.1",
            "3.3.0",
            "3.2.2",
            "3.2.1",
            "3.2.0",
            "3.1.2",
            "3.1.1",
            "3.1.0",
            "3.0.0",
            "2.28.0",
            "2.26.1",
            "2.26.0",
            "2.25.1",
            "2.25.0",
            "2.24.0",
            "2.23.2",
            "2.23.1",
            "2.23.0",
            "2.22.0",
            "2.21.2",
            "2.21.1",
            "2.21.0",
            "2.20.1",
            "2.20.0",
            "2.19.0",
            "2.18.1",
            "2.18.0",
            "2.17.1",
            "2.17.0",
            "2.16.0",
            "2.15.0",
            "2.14.0",
            "2.13.0",
            "2.12.0",
            "2.11.1",
            "2.11.0",
            "2.10.0",
            "2.9.1",
            "2.9.0",
            "2.8.1",
            "2.6.7",
            "2.6.6",
            "2.6.5",
            "2.6.4",
            "2.6.3",
            "2.6.2",
            "2.6.1",
            "2.6.0",
            "2.5.1",
            "2.5.0",
            "2.4.0",
            "2.3.6",
            "2.3.5",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.3.0",
            "2.2.0",
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23433.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:32.546056678Z",
      "provider": "osv",
      "references": [
        "https://github.com/algolia/algoliasearch-helper-js/blob/3.5.5/src/SearchParameters/index.js%23L291",
        "https://github.com/algolia/algoliasearch-helper-js/commit/4ff542b70b92a6b81cce8b9255700b0bc0817edd",
        "https://snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-1570421"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-23433",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385525,
  "published_at": "2021-11-19T20:15:17.903+00:00"
}