{
  "cveId": "CVE-2026-11386",
  "url": "https://patchblox.com/security/cve/CVE-2026-11386",
  "summary": "CVE-2026-11386 is fixed in 5 products on 1 platform, first by ubuntu-advantage-pro 37.2ubuntu0.1, released July 17, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ubuntu-advantage-pro: An input validation and injection vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools)",
  "description": "An input validation and injection vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client constructs APT source files (such as /etc/apt/sources.list.d/ubuntu-.list or their DEB822 equivalents) using data received directly from the contract server response via the directives.suites[] and directives.aptURL fields. Because the client utilizes Python\u0027s str.format() to write these files without performing escaping, validation, or newline character filtering, a malicious or tampered contract response containing embedded newline (\\n) characters can successfully inject arbitrary, attacker-controlled deb configuration lines into root-owned APT sources. When combined with the unvalidated additionalPackages[] field\u2014which is passed positionally into a root-executed apt-get install command\u2014an attacker capable of spoofing or manipulating the contract response (e.g., via a compromised internal infrastructure, an intercepted connection utilizing a trusted CA, or local logical bugs) can force the client to fetch and install malicious packages. This ultimately leads to arbitrary code execution with root privileges on the affected system. This component is preinstalled on supported Ubuntu Server releases and auto-attaches by default on cloud provider Ubuntu Pro images.",
  "published": "2026-07-17T07:00:00Z",
  "severity": "High",
  "epss": 0.00526,
  "epssPercentile": 0.44809,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "ubuntu-advantage-pro",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "37.2ubuntu~22.04.1",
      "fix": "ubuntu-advantage-pro 37.2ubuntu~22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ubuntu-advantage-pro-37.2ubuntu-22.04.1",
      "released": "2026-07-18T12:43:06Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-advantage-pro",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "37.2ubuntu~24.04.1",
      "fix": "ubuntu-advantage-pro 37.2ubuntu~24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ubuntu-advantage-pro-37.2ubuntu-24.04.1",
      "released": "2026-07-18T12:43:09Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-advantage-pro",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "37.2ubuntu0.1",
      "fix": "ubuntu-advantage-pro 37.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ubuntu-advantage-pro-37.2ubuntu0.1",
      "released": "2026-07-17T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-advantage-tools",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "37.2ubuntu~22.04.1",
      "fix": "ubuntu-advantage-tools 37.2ubuntu~22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ubuntu-advantage-tools-37.2ubuntu-22.04.1",
      "released": "2026-07-18T12:43:06Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-advantage-tools",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "37.2ubuntu~24.04.1",
      "fix": "ubuntu-advantage-tools 37.2ubuntu~24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ubuntu-advantage-tools-37.2ubuntu-24.04.1",
      "released": "2026-07-18T12:43:09Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-advantage-tools",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "37.2ubuntu0.1",
      "fix": "ubuntu-advantage-tools 37.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ubuntu-advantage-tools-37.2ubuntu0.1",
      "released": "2026-07-17T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-auto-attach",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "37.2ubuntu~22.04.1",
      "fix": "ubuntu-pro-auto-attach 37.2ubuntu~22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ubuntu-pro-auto-attach-37.2ubuntu-22.04.1",
      "released": "2026-07-18T12:43:06Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-auto-attach",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "37.2ubuntu~24.04.1",
      "fix": "ubuntu-pro-auto-attach 37.2ubuntu~24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ubuntu-pro-auto-attach-37.2ubuntu-24.04.1",
      "released": "2026-07-18T12:43:09Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-auto-attach",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "37.2ubuntu0.1",
      "fix": "ubuntu-pro-auto-attach 37.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ubuntu-pro-auto-attach-37.2ubuntu0.1",
      "released": "2026-07-17T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "37.2ubuntu~22.04.1",
      "fix": "ubuntu-pro-client 37.2ubuntu~22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ubuntu-pro-client-37.2ubuntu-22.04.1",
      "released": "2026-07-18T12:43:06Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "37.2ubuntu~24.04.1",
      "fix": "ubuntu-pro-client 37.2ubuntu~24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ubuntu-pro-client-37.2ubuntu-24.04.1",
      "released": "2026-07-18T12:43:09Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "37.2ubuntu0.1",
      "fix": "ubuntu-pro-client 37.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ubuntu-pro-client-37.2ubuntu0.1",
      "released": "2026-07-17T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client-l10n",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "37.2ubuntu~22.04.1",
      "fix": "ubuntu-pro-client-l10n 37.2ubuntu~22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ubuntu-pro-client-l10n-37.2ubuntu-22.04.1",
      "released": "2026-07-18T12:43:06Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client-l10n",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "37.2ubuntu~24.04.1",
      "fix": "ubuntu-pro-client-l10n 37.2ubuntu~24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ubuntu-pro-client-l10n-37.2ubuntu-24.04.1",
      "released": "2026-07-18T12:43:09Z"
    },
    {
      "platform": "linux",
      "product": "ubuntu-pro-client-l10n",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "37.2ubuntu0.1",
      "fix": "ubuntu-pro-client-l10n 37.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-ubuntu-pro-client-l10n-37.2ubuntu0.1",
      "released": "2026-07-17T07:00:00Z"
    }
  ],
  "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"
  }
}