{
  "cveId": "CVE-2026-53655",
  "url": "https://patchblox.com/security/cve/CVE-2026-53655",
  "summary": "CVE-2026-53655 is fixed in 11 products on 1 platform, first by DEBIAN-CVE-2026-53655, released June 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)",
  "description": "node-tar is a full-featured Tar for Node.js. Prior to 7.5.16, tar (node-tar) applies a PAX extended header\u0027s size= record (and other PAX overrides) to the next header entry of any type, including intermediary metadata headers such as a GNU long-name (L) or long-link (K) entry. Per POSIX pax, a PAX extended header (x) describes the next file entry, not the intermediary extension headers that may sit between the x header and the file it annotates. Because node-tar lets the PAX size override the byte length of an intervening L/K/x header, an attacker can desynchronize node-tar\u0027s stream cursor relative to every other mainstream tar implementation (GNU tar, libarchive/bsdtar, Python tarfile, and the now-fixed tar-rs / astral-tokio-tar). The result is a tar parser interpretation differential (CWE-436): a single crafted archive yields a different set of members under node-tar than under the reference tar tools. An attacker can use this to hide a member from one parser while it is visible to another, which defeats security tooling whose scanner and extractor disagree on archive contents (e.g. a malware/secret scanner that lists entries with one library while a downstream step extracts with another) This vulnerability is fixed in 7.5.16.",
  "published": "2026-06-22T16:16:38Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
  "cwe": "Interpretation Conflict",
  "epss": 0.00156,
  "epssPercentile": 0.04812,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53655",
  "fixes": [
    {
      "platform": "linux",
      "product": "node-tar",
      "release": "Debian 14",
      "fixedVersion": "7.5.16\u002B~4.0.1-2",
      "fix": "DEBIAN-CVE-2026-53655",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53655",
      "released": "2026-06-22T16:16:38Z"
    },
    {
      "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"
    },
    {
      "platform": "linux",
      "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"
    },
    {
      "platform": "linux",
      "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"
  }
}