Security advisory

{
  "id": "939b97d1c6c3c75f6b2461ffe8f2419c41d1c7999bafbc3166ca1b8b8e2668f5",
  "url": "https://osv.dev/vulnerability/CVE-2021-3803",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3803",
    "summary": "nth-check is vulnerable to Inefficient Regular Expression Complexity",
    "evidence": "osv:CVE-2021-3803",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3803",
      "aliases": [
        "CVE-2021-3803",
        "GHSA-rp65-9cf3-cjxr"
      ],
      "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/fb55/nth-check",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "65e40b02b0437daf5d41760352433435ad2370a0"
                },
                {
                  "fixed": "9894c1d2010870c351f66c6f6efcf656e26bb726"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nth-check_project:nth-check:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9894c1d2010870c351f66c6f6efcf656e26bb726"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.0.0",
            "v1.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3803.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:52.369356671Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2023/05/msg00023.html",
        "https://github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726",
        "https://huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3803",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386320,
  "published_at": "2021-09-17T07:15:09.153+00:00"
}