{
  "cveId": "CVE-2021-3918",
  "url": "https://patchblox.com/security/cve/CVE-2021-3918",
  "summary": "CVE-2021-3918 is fixed in 8 products on 1 platform, first by node-json-schema 0.2.3-1\u002Bdeb10u1build0.18.04.1, released November 13, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "nodejs: Node.js is a software development platform for building fast and scalable network applications in the JavaScript prog...",
  "description": "Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. \n\nThe following packages have been upgraded to a later upstream version: nodejs (14.18.2), nodejs-nodemon (2.0.15). (BZ#2027609)\n\nSecurity Fix(es):\n\n* nodejs-json-schema: Prototype pollution vulnerability (CVE-2021-3918)\n\n* nodejs-ini: Prototype pollution via malicious INI file (CVE-2020-7788)\n\n* nodejs-glob-parent: Regular expression denial of service (CVE-2020-28469)\n\n* nodejs-ansi-regex: Regular expression denial of service (ReDoS) matching ANSI escape codes (CVE-2021-3807)\n\n* normalize-url: ReDoS for data URLs (CVE-2021-33502)\n\n* nodejs-tar: Insufficient symlink protection due to directory cache poisoning using symbolic links allowing arbitrary file creation and overwrite (CVE-2021-37701)\n\n* nodejs-tar: Insufficient symlink protection due to directory cache poisoning using symbolic links allowing arbitrary file creation and overwrite (CVE-2021-37712)\n\n* llhttp: HTTP Request Smuggling due to spaces in headers (CVE-2021-22959)\n\n* llhttp: HTTP Request Smuggling when parsing the body of chunked requests (CVE-2021-22960)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2021-11-13T01:15:00Z",
  "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",
  "epss": 0.0383,
  "epssPercentile": 0.90153,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-json-schema",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "0.4.0\u002B~7.0.9-1",
      "fix": "DEBIAN-CVE-2021-3918",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3918",
      "released": "2021-11-13T09:15:06Z"
    },
    {
      "platform": "linux",
      "product": "node-json-schema",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.4.0\u002B~7.0.9-1",
      "fix": "DEBIAN-CVE-2021-3918",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3918",
      "released": "2021-11-13T09:15:06Z"
    },
    {
      "platform": "linux",
      "product": "node-json-schema",
      "release": "Debian 14",
      "fixedVersion": "0.4.0\u002B~7.0.9-1",
      "fix": "DEBIAN-CVE-2021-3918",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3918",
      "released": "2021-11-13T09:15:06Z"
    },
    {
      "platform": "linux",
      "product": "node-json-schema",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.2.3-1\u002Bdeb10u1build0.18.04.1",
      "fix": "node-json-schema 0.2.3-1\u002Bdeb10u1build0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-node-json-schema-0.2.3-1-deb10u1build0.18.04.1",
      "released": "2021-11-13T01:15:00Z"
    },
    {
      "platform": "linux",
      "product": "node-json-schema",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.2.3-1\u002Bdeb10u1build0.20.04.1",
      "fix": "node-json-schema 0.2.3-1\u002Bdeb10u1build0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-node-json-schema-0.2.3-1-deb10u1build0.20.04.1",
      "released": "2021-11-13T01:15:00Z"
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    {
      "platform": "linux",
      "product": "nodejs",
      "release": "RHEL 8",
      "fixedVersion": "1:14.18.2-2.module\u002Bel8.5.0\u002B13644\u002B8d46dafd",
      "fix": "RHSA-2022:0350",
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      "released": "2022-02-01T00:00:00Z"
    },
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      "release": "almalinux 8",
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      "fix": "ALSA-2022:0350",
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      "fix": "ELSA-2021-5171",
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    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}