Security advisory

{
  "id": "51b0e18a5fab96982bb90974fd6add3552656269ec9408e6ec49a72bbb2b0a83",
  "url": "https://osv.dev/vulnerability/CVE-2021-3777",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3777",
    "summary": "nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity",
    "evidence": "osv:CVE-2021-3777",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3777",
      "aliases": [
        "CVE-2021-3777",
        "GHSA-jgrx-mgxx-jf9v"
      ],
      "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/daaku/nodejs-tmpl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "153b36d516b581950a652cb625d6dcd2dd4e1c37"
                },
                {
                  "fixed": "4c654e4d1542f329ed561fd95ccd80f30c6872d6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tmpl_project:tmpl:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4c654e4d1542f329ed561fd95ccd80f30c6872d6"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3777.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:50.821021437Z",
      "provider": "osv",
      "references": [
        "https://github.com/daaku/nodejs-tmpl/commit/4c654e4d1542f329ed561fd95ccd80f30c6872d6",
        "https://huntr.dev/bounties/a07b547a-f457-41c9-9d89-ee48bee8a4df"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3777",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386262,
  "published_at": "2021-09-15T08:15:06.673+00:00"
}