{
  "cveId": "CVE-2026-66486",
  "url": "https://patchblox.com/security/cve/CVE-2026-66486",
  "summary": "CVE-2026-66486 is fixed in 2 products on 1 platform, first by cpio 2.15\u002Bdfsg-2.1ubuntu0.1, released August 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Improper Output Encoding in GNU cpio",
  "description": "GNU cpio is vulnerable to improper encoding or escaping of output in its archive member listing functionality. When listing archive members via cpio -it, member names are printed directly to output without quoting or escaping. An attacker can craft a cpio archive containing member names with embedded newline characters or ANSI escape sequences, causing forged listing entries or terminal control sequence injection when the listing is displayed. This issue has been fixed in commit 2ff9600c9ef32e88759843cdbde74c8db5ae9b30",
  "published": "2026-08-10T04:17:00Z",
  "severity": "Moderate",
  "cwe": "Improper Encoding or Escaping of Output",
  "epss": 0.00184,
  "epssPercentile": 0.08072,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66486",
  "fixes": [
    {
      "platform": "linux",
      "product": "cpio",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.12\u002Bdfsg-6ubuntu0.18.04.4\u002Besm1",
      "fix": "cpio 2.12\u002Bdfsg-6ubuntu0.18.04.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-cpio-2.12-dfsg-6ubuntu0.18.04.4-esm1",
      "released": "2026-09-03T01:35:39Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.13\u002Bdfsg-2ubuntu0.4\u002Besm1",
      "fix": "cpio 2.13\u002Bdfsg-2ubuntu0.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-cpio-2.13-dfsg-2ubuntu0.4-esm1",
      "released": "2026-09-03T01:35:42Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.13\u002Bdfsg-7ubuntu0.2",
      "fix": "cpio 2.13\u002Bdfsg-7ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-cpio-2.13-dfsg-7ubuntu0.2",
      "released": "2026-09-03T01:35:47Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.15\u002Bdfsg-1ubuntu2.1",
      "fix": "cpio 2.15\u002Bdfsg-1ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-cpio-2.15-dfsg-1ubuntu2.1",
      "released": "2026-09-03T01:35:47Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.15\u002Bdfsg-2.1ubuntu0.1",
      "fix": "cpio 2.15\u002Bdfsg-2.1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-cpio-2.15-dfsg-2.1ubuntu0.1",
      "released": "2026-08-10T04:17:00Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.15-160000.3.1",
      "fix": "OPENSUSE-SU-2026:21747-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21747-1",
      "released": "2026-09-03T14:47:52Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "sles 15.7",
      "fixedVersion": "2.13-150400.3.10.1",
      "fix": "SUSE-SU-2026:4012-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4012-1",
      "released": "2026-09-07T07:34:54Z"
    },
    {
      "platform": "linux",
      "product": "cpio",
      "release": "sles 16.0",
      "fixedVersion": "2.15-160000.3.1",
      "fix": "SUSE-SU-2026:23612-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23612-1",
      "released": "2026-09-03T14:49:10Z"
    },
    {
      "platform": "linux",
      "product": "cpio-win32",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.12\u002Bdfsg-6ubuntu0.18.04.4\u002Besm1",
      "fix": "cpio-win32 2.12\u002Bdfsg-6ubuntu0.18.04.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-cpio-win32-2.12-dfsg-6ubuntu0.18.04.4-esm1",
      "released": "2026-09-03T01:35:39Z"
    },
    {
      "platform": "linux",
      "product": "cpio-win32",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.13\u002Bdfsg-2ubuntu0.4\u002Besm1",
      "fix": "cpio-win32 2.13\u002Bdfsg-2ubuntu0.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-cpio-win32-2.13-dfsg-2ubuntu0.4-esm1",
      "released": "2026-09-03T01:35:42Z"
    },
    {
      "platform": "linux",
      "product": "cpio-win32",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.13\u002Bdfsg-7ubuntu0.2",
      "fix": "cpio-win32 2.13\u002Bdfsg-7ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-cpio-win32-2.13-dfsg-7ubuntu0.2",
      "released": "2026-09-03T01:35:47Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}