{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.5.0"
              },
              {
                "fixed": "8.0.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "84409825f494664ac9fe74f696ade1571e7ce2cc"
            },
            {
              "fixed": "a710b450301c87203097758250fac456d09c1acb"
            }
          ],
          "repo": "https://github.com/fastify/fastify-cli",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-88v4-3ph7-r88m"
  ],
  "database_specific": {
    "cna_assigner": "openjs",
    "cwe_ids": [
      "CWE-1327"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75021.json"
  },
  "details": "fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and because the Inspector protocol allows arbitrary code evaluation, a remote party that reaches it can achieve remote code execution on the developer's machine. This affects fastify-cli from 1.5.0 up to 8.0.1. Users should upgrade to fastify-cli 8.0.1, which honors the configured Inspector bind address.",
  "id": "CVE-2026-75021",
  "modified": "2026-09-10T03:30:16.914122167Z",
  "published": "2026-09-08T12:50:23.633Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://cna.openjsf.org/security-advisories.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75021.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/fastify/fastify-cli/security/advisories/GHSA-88v4-3ph7-r88m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75021"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address"
}