{
  "cveId": "CVE-2026-16729",
  "url": "https://patchblox.com/security/cve/CVE-2026-16729",
  "summary": "CVE-2026-16729 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2026-16729, released August 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "node-undici: undici\u0027s setCookie function does not fully sanitize cookie attributes",
  "description": "undici\u0027s setCookie function does not fully sanitize cookie attributes. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, a domain value is not checked for semicolons and entries in the unparsed array are not sanitized, so attacker-influenced input can inject additional cookie attributes. For example, a domain value containing a semicolon can append attributes such as SameSite, and an unparsed entry can inject attributes such as HttpOnly, without the caller setting them. Applications that pass user-controlled input to these fields, such as multi-tenant or reverse-proxy servers that scope session cookies to a tenant-supplied domain, can have SameSite CSRF protections bypassed, or the Secure, HttpOnly, and SameSite attributes forced, stripped, or overridden. The issue is fixed in undici 6.28.0, 7.29.0, and 8.9.0.",
  "published": "2026-07-29T17:16:51Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
  "epss": 0.00278,
  "epssPercentile": 0.20389,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-undici",
      "release": "Debian 14",
      "fixedVersion": "8.9.0\u002Bdfsg\u002B~cs3.2.0-1",
      "fix": "DEBIAN-CVE-2026-16729",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-16729",
      "released": "2026-08-05T15:05:13Z"
    },
    {
      "platform": "linux",
      "product": "nodejs20",
      "release": "sles 15.6",
      "fixedVersion": "20.20.2-150600.3.21.1",
      "fix": "SUSE-SU-2026:3929-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3929-1",
      "released": "2026-09-03T07:18:06Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-docs",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-full-i18n",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:22.23.2-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs22-npm",
      "release": "amzn 2023",
      "fixedVersion": "1:10.9.8-1.22.23.2.1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-docs",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-full-i18n",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:24.18.1-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    },
    {
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      "product": "nodejs24-npm",
      "release": "amzn 2023",
      "fixedVersion": "1:11.16.0-1.24.18.1.1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
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    {
      "platform": "linux",
      "product": "v8-12.4-devel",
      "release": "amzn 2023",
      "fixedVersion": "3:12.4.254.21-1.22.23.2.1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2060",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2060",
      "released": "2026-08-17T09:00:00Z"
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    {
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      "product": "v8-13.6-devel",
      "release": "amzn 2023",
      "fixedVersion": "3:13.6.233.17-1.24.18.1.1.amzn2023.0.2",
      "fix": "ALAS2023-2026-2059",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2059",
      "released": "2026-08-17T09:00:00Z"
    }
  ],
  "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"
  }
}