{
  "cveId": "CVE-2026-41205",
  "url": "https://patchblox.com/security/cve/CVE-2026-41205",
  "summary": "CVE-2026-41205 is fixed in 3 products on 1 platform, first by python3-mako 1.3.10-3ubuntu0.1, released April 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Mako: Path traversal via double-slash URI prefix in TemplateLookup",
  "description": "Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11.",
  "published": "2026-04-23T17:00:00Z",
  "severity": "Important",
  "cwe": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
  "epss": 0.00361,
  "epssPercentile": 0.3008,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41205",
  "fixes": [
    {
      "platform": "linux",
      "product": "python-mako",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.7\u002Bds1-1ubuntu0.2\u002Besm1",
      "fix": "python-mako 1.0.7\u002Bds1-1ubuntu0.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-mako-1.0.7-ds1-1ubuntu0.2-esm1",
      "released": "2026-05-15T16:01:18Z"
    },
    {
      "platform": "linux",
      "product": "python-mako",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.0\u002Bds1-1ubuntu2.1\u002Besm1",
      "fix": "python-mako 1.1.0\u002Bds1-1ubuntu2.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-mako-1.1.0-ds1-1ubuntu2.1-esm1",
      "released": "2026-05-15T16:01:22Z"
    },
    {
      "platform": "linux",
      "product": "python-mako-doc",
      "release": "amzn 2023",
      "fixedVersion": "1.1.4-3.amzn2023.0.4",
      "fix": "ALAS2023-2026-1846",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1846",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.7\u002Bds1-1ubuntu0.2\u002Besm1",
      "fix": "python3-mako 1.0.7\u002Bds1-1ubuntu0.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-mako-1.0.7-ds1-1ubuntu0.2-esm1",
      "released": "2026-05-15T16:01:18Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.0\u002Bds1-1ubuntu2.1\u002Besm1",
      "fix": "python3-mako 1.1.0\u002Bds1-1ubuntu2.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-mako-1.1.0-ds1-1ubuntu2.1-esm1",
      "released": "2026-05-15T16:01:22Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.1.3\u002Bds1-2ubuntu0.2",
      "fix": "python3-mako 1.1.3\u002Bds1-2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-mako-1.1.3-ds1-2ubuntu0.2",
      "released": "2026-05-15T16:01:26Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.3.2-1ubuntu0.1",
      "fix": "python3-mako 1.3.2-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-mako-1.3.2-1ubuntu0.1",
      "released": "2026-05-15T16:01:30Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1.3.9-1ubuntu0.1",
      "fix": "python3-mako 1.3.9-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-python3-mako-1.3.9-1ubuntu0.1",
      "released": "2026-05-15T16:01:35Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.3.10-3ubuntu0.1",
      "fix": "python3-mako 1.3.10-3ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-mako-1.3.10-3ubuntu0.1",
      "released": "2026-04-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-mako",
      "release": "amzn 2023",
      "fixedVersion": "1.1.4-3.amzn2023.0.4",
      "fix": "ALAS2023-2026-1846",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1846",
      "released": "2026-06-22T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}