{
  "cveId": "CVE-2026-33747",
  "url": "https://patchblox.com/security/cve/CVE-2026-33747",
  "summary": "CVE-2026-33747 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-33747, released March 27, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "docker.io: BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner",
  "description": "BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with \u0060#syntax\u0060 or \u0060--build-arg BUILDKIT_SYNTAX\u0060. Using these options with a well-known frontend image like \u0060docker/dockerfile\u0060 is not affected.",
  "published": "2026-03-27T01:16:21Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00507,
  "epssPercentile": 0.43534,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "26.1.5\u002Bdfsg1-9\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-33747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33747",
      "released": "2026-03-27T01:16:21Z"
    },
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Debian 14",
      "fixedVersion": "28.5.2\u002Bdfsg4-3",
      "fix": "DEBIAN-CVE-2026-33747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33747",
      "released": "2026-03-27T01:16:21Z"
    },
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "26.1.3-0ubuntu1~20.04.1\u002Besm2",
      "fix": "docker.io 26.1.3-0ubuntu1~20.04.1\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-docker.io-26.1.3-0ubuntu1-20.04.1-esm2",
      "released": "2026-05-15T16:01:22Z"
    },
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "29.1.3-0ubuntu3~22.04.2",
      "fix": "docker.io 29.1.3-0ubuntu3~22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-docker.io-29.1.3-0ubuntu3-22.04.2",
      "released": "2026-05-15T16:01:26Z"
    },
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "29.1.3-0ubuntu3~24.04.2",
      "fix": "docker.io 29.1.3-0ubuntu3~24.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-docker.io-29.1.3-0ubuntu3-24.04.2",
      "released": "2026-05-15T16:01:30Z"
    },
    {
      "platform": "linux",
      "product": "docker.io",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "29.1.3-0ubuntu4.1",
      "fix": "docker.io 29.1.3-0ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-docker.io-29.1.3-0ubuntu4.1",
      "released": "2026-04-21T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "0.0.20260402T184258-150000.1.158.1",
      "fix": "SUSE-SU-2026:1205-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1205-1",
      "released": "2026-04-07T14:18:15Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260723T184607-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21483-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21483-1",
      "released": "2026-07-30T09:09:47Z"
    },
    {
      "platform": "linux",
      "product": "tailscale",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.104.1-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:22203-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22203-1",
      "released": "2026-11-07T00:47:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}