{
  "cveId": "CVE-2026-109869",
  "url": "https://patchblox.com/security/cve/CVE-2026-109869",
  "summary": "CVE-2026-109869 is fixed in 21 products on 1 platform, first by DEBIAN-CVE-2026-109869, released November 1, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "node-undici: undici is an HTTP client library for Node.js",
  "description": "undici is an HTTP client library for Node.js. In versions 6.23.0 through 6.29.0, 7.18.0 through 7.30.0, and 8.0.0 through 8.12.1, its fetch() implementation crashes the Node.js process when a malicious server returns a response with more than five content codings and closes the connection before sending the body. undici rejects such responses because of a content-encoding limit, but it created the internal response stream before that check and returned without attaching an error listener or aborting the request, so the early close surfaces a content-length mismatch on the orphaned stream, which Node.js treats as an unhandled error and terminates the process. A remote, unauthenticated server can trigger this with a single response, even when the application correctly catches the fetch() rejection, resulting in a denial of service. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, and users should upgrade to one of those versions or later. There is no workaround.",
  "published": "2026-10-15T19:17:21Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00344,
  "epssPercentile": 0.28106,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-undici",
      "release": "Debian 14",
      "fixedVersion": "8.12.2\u002Bdfsg\u002B~cs3.2.3-1",
      "fix": "DEBIAN-CVE-2026-109869",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-109869",
      "released": "2026-11-01T22:29:49Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-docs",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-full-i18n",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.4-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-npm",
      "release": "amzn 2023",
      "fixedVersion": "1:10.9.9-1.22.23.4.1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-docs",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-full-i18n",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
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      "product": "nodejs24-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
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      "product": "nodejs24-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:24.22.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-npm",
      "release": "amzn 2023",
      "fixedVersion": "1:11.19.1-1.24.22.1.1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    },
    {
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      "product": "v8-12.4-devel",
      "release": "amzn 2023",
      "fixedVersion": "3:12.4.254.21-1.22.23.4.1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3328",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3328",
      "released": "2026-11-07T01:06:07Z"
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    {
      "platform": "linux",
      "product": "v8-13.6-devel",
      "release": "amzn 2023",
      "fixedVersion": "3:13.6.233.17-1.24.22.1.1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3330",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3330",
      "released": "2026-11-07T01:06:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}