Security advisory

{
  "id": "621a0b45b9a75c7670669dd28a3ce581e817effd46dfa934022ca901088b19fe",
  "url": "https://osv.dev/vulnerability/CVE-2018-21270",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-21270",
    "summary": "Versions less than 0.0.6 of the Node.js stringstream module are vulnerable to an out-of-bounds read because of allocation of uninitialized buffers when a number is passed in the input stream (when using Node.js 4.x).",
    "evidence": "osv:CVE-2018-21270",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-21270",
      "aliases": [
        "CVE-2018-21270",
        "GHSA-mf6x-7mm4-x2g7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nodejs/node",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fbe0be19ebfb422d8fa20ea5204c1713e9214d5f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.0.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.0.4",
            "v0.0.3",
            "v0.0.2",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-21270.json"
          }
        }
      ],
      "modified": "2026-10-24T10:49:40.834863904Z",
      "provider": "osv",
      "references": [
        "https://github.com/mhart/StringStream/issues/7",
        "https://hackerone.com/reports/321670",
        "https://www.npmjs.com/advisories/664"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-21270",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441792,
  "published_at": "2020-12-03T21:15:11.1+00:00"
}