{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-21716",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-21716",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-30T19:07:28.538Z",
    "updatedAt": "2026-03-31T14:27:23.323Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "An incomplete fix for CVE-2024-36137 leaves `FileHandle.chmod()` and `FileHandle.chown()` in the promises API without the required permission checks, while their callback-based equivalents (`fs.fchmod()`, `fs.fchown()`) were correctly patched.\r\n\r\nAs a result, code running under `--permission` with restricted `--allow-fs-write` can still use promise-based `FileHandle` methods to modify file permissions and ownership on already-open file descriptors, bypassing the intended write restrictions.\r\n\r\nThis vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted.",
      "affected": [
        {
          "vendor": "nodejs",
          "product": "node",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "20.20.1",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "20.20.1"
            },
            {
              "version": "22.22.1",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "22.22.1"
            },
            {
              "version": "24.14.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "24.14.0"
            },
            {
              "version": "25.8.1",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "25.8.1"
            }
          ]
        }
      ]
    }
  }
}