{
  "cveId": "CVE-2021-22959",
  "url": "https://patchblox.com/security/cve/CVE-2021-22959",
  "summary": "CVE-2021-22959 is fixed in 15 products on 2 platforms, first by Node.js 12 12.22.7, released October 12, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Node.js 14 and 2 others: HTTP Request Smuggling (CWE-444)",
  "description": "The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp \u003C v2.1.4 and \u003C v6.0.6.",
  "published": "2021-11-15T15:15:06Z",
  "severity": "Moderate",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cwe": "CWE-444: HTTP Request Smuggling (CWE-444)",
  "epss": 0.03156,
  "epssPercentile": 0.88051,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2021-22959",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Node.js 12",
      "fixedVersion": "12.22.7",
      "fix": "Node.js 12 12.22.7",
      "url": "https://patchblox.com/security/fix/windows-app/openjs.nodejs.12-12.22.7",
      "released": "2021-10-12T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Node.js 14",
      "fixedVersion": "14.18.1",
      "fix": "Node.js 14 14.18.1",
      "url": "https://patchblox.com/security/fix/windows-app/openjs.nodejs.14-14.18.1",
      "released": "2021-10-12T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Node.js 16",
      "fixedVersion": "16.11.1",
      "fix": "Node.js 16 16.11.1",
      "url": "https://patchblox.com/security/fix/windows-app/openjs.nodejs.16-16.11.1",
      "released": "2021-10-12T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "12.22.12~dfsg-1~deb11u1",
      "fix": "DSA-5170-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5170-1",
      "released": "2022-06-27T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "12.22.7~dfsg-1",
      "fix": "DEBIAN-CVE-2021-22959",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-22959",
      "released": "2021-11-15T15:15:06Z"
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    {
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      "product": "nodejs",
      "release": "Debian 13.5 (trixie)",
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      "fix": "DEBIAN-CVE-2021-22959",
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      "released": "2021-11-15T15:15:06Z"
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      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-22959",
      "released": "2021-11-15T15:15:06Z"
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      "fixedVersion": "1:14.18.2-2.module\u002Bel8.5.0\u002B13644\u002B8d46dafd",
      "fix": "RHSA-2022:0350",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0350",
      "released": "2022-02-01T00:00:00Z"
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      "product": "nodejs",
      "release": "almalinux 8",
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      "released": "2023-02-17T20:47:00Z"
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    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}