Security advisory

{
  "id": "33218fd83dbee1264c788e989003cbddeec56f0b4a8994afd685ce4a038b9f7e",
  "url": "https://osv.dev/vulnerability/CVE-2021-3820",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3820",
    "summary": "inflect is vulnerable to Inefficient Regular Expression Complexity",
    "evidence": "osv:CVE-2021-3820",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3820",
      "aliases": [
        "CVE-2021-3820",
        "GHSA-x55w-vjjp-222r"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pksunkara/inflect",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "71961bd70c2f516e03a1a73538f783ada3aab2c0"
                },
                {
                  "fixed": "a9a0a8e9561c3487854c7cae42565d9652ec858b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:inflect_project:inflect:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a9a0a8e9561c3487854c7cae42565d9652ec858b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.6",
            "v0.3.5",
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3820.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:52.669871751Z",
      "provider": "osv",
      "references": [
        "https://github.com/pksunkara/inflect/commit/a9a0a8e9561c3487854c7cae42565d9652ec858b",
        "https://huntr.dev/bounties/4612b31a-072b-4f61-a916-c7e4cbc2042a"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3820",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384715,
  "published_at": "2021-09-27T13:15:07.887+00:00"
}