{
  "cveId": "CVE-2026-49825",
  "url": "https://patchblox.com/security/cve/CVE-2026-49825",
  "summary": "CVE-2026-49825 is fixed in 5 products on 1 platform, first by python-lxml 4.2.1-1ubuntu0.6\u002Besm1, released August 20, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "lxml: javascript: URL bypass in Cleaner via xlink:href",
  "description": "lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in \u0060\u0060lxml.html.defs.link_attrs\u0060\u0060 were missing \u0060\u0060xlink:href\u0060\u0060, which can be used for URL bypass attacks in embedded SVG/MathML/etc. content. This vulnerability was fixed in lxml 6.1.1 and lxml_html_clean 0.4.5.",
  "published": "2026-08-20T08:17:00Z",
  "severity": "Important",
  "cvss": 8.2,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
  "cwe": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
  "epss": 0.00297,
  "epssPercentile": 0.22532,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49825",
  "fixes": [
    {
      "platform": "linux",
      "product": "lxml",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.9.2-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-49825",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-49825",
      "released": "2026-09-14T12:56:55Z"
    },
    {
      "platform": "linux",
      "product": "lxml",
      "release": "Debian 14",
      "fixedVersion": "6.1.3-1",
      "fix": "DEBIAN-CVE-2026-49825",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-49825",
      "released": "2026-09-14T12:56:55Z"
    },
    {
      "platform": "linux",
      "product": "lxml-html-clean",
      "release": "Debian 14",
      "fixedVersion": "0.4.5-1",
      "fix": "DEBIAN-CVE-2026-49825",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-49825",
      "released": "2026-09-14T12:56:55Z"
    },
    {
      "platform": "linux",
      "product": "python-lxml",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.2.1-1ubuntu0.6\u002Besm1",
      "fix": "python-lxml 4.2.1-1ubuntu0.6\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-lxml-4.2.1-1ubuntu0.6-esm1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python-lxml",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.5.0-1ubuntu0.5\u002Besm1",
      "fix": "python-lxml 4.5.0-1ubuntu0.5\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-lxml-4.5.0-1ubuntu0.5-esm1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python-lxml",
      "release": "rocky 8",
      "fixedVersion": "0:4.2.3-5.el8_10",
      "fix": "RLSA-2026:67943",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-67943",
      "released": "2026-09-17T12:01:36Z"
    },
    {
      "platform": "linux",
      "product": "python-lxml",
      "release": "rocky 9",
      "fixedVersion": "0:4.6.5-3.el9_8.1",
      "fix": "RLSA-2026:66204",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-66204",
      "released": "2026-09-11T12:05:26Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "RHEL 8",
      "fixedVersion": "0:4.2.3-5.el8_10",
      "fix": "RHSA-2026:67943",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-67943",
      "released": "2026-09-19T18:31:30Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "RHEL 9",
      "fixedVersion": "0:4.6.5-3.el9_8.1",
      "fix": "RHSA-2026:66204",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-66204",
      "released": "2026-09-13T12:48:01Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.2.1-1ubuntu0.6\u002Besm1",
      "fix": "python3-lxml 4.2.1-1ubuntu0.6\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-lxml-4.2.1-1ubuntu0.6-esm1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.5.0-1ubuntu0.5\u002Besm1",
      "fix": "python3-lxml 4.5.0-1ubuntu0.5\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-lxml-4.5.0-1ubuntu0.5-esm1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.8.0-1ubuntu0.1",
      "fix": "python3-lxml 4.8.0-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-lxml-4.8.0-1ubuntu0.1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.2.1-1ubuntu0.2",
      "fix": "python3-lxml 5.2.1-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-lxml-5.2.1-1ubuntu0.2",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "6.0.2-1ubuntu0.1",
      "fix": "python3-lxml 6.0.2-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-lxml-6.0.2-1ubuntu0.1",
      "released": "2026-08-20T08:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "almalinux 8",
      "fixedVersion": "4.2.3-5.el8_10",
      "fix": "ALSA-2026:67943",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-67943",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "almalinux 9",
      "fixedVersion": "4.6.5-3.el9_8.1",
      "fix": "ALSA-2026:66204",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-66204",
      "released": "2026-09-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "ol 8",
      "fixedVersion": "0:4.2.3-5.el8_10",
      "fix": "ELSA-2026-67943",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-67943",
      "released": "2026-09-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-lxml",
      "release": "ol 9",
      "fixedVersion": "0:4.6.5-3.el9_8.1",
      "fix": "ELSA-2026-66204-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-66204-0",
      "released": "2026-09-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.12-lxml",
      "release": "RHEL 9",
      "fixedVersion": "0:4.9.3-2.el9_8.1",
      "fix": "RHSA-2026:66203",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-66203",
      "released": "2026-09-13T12:48:01Z"
    },
    {
      "platform": "linux",
      "product": "python3.12-lxml",
      "release": "almalinux 9",
      "fixedVersion": "4.9.3-2.el9_8.1",
      "fix": "ALSA-2026:66203",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-66203",
      "released": "2026-09-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.12-lxml",
      "release": "ol 9",
      "fixedVersion": "0:4.9.3-2.el9_8.1",
      "fix": "ELSA-2026-66203-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-66203-0",
      "released": "2026-09-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.12-lxml",
      "release": "rocky 9",
      "fixedVersion": "0:4.9.3-2.el9_8.1",
      "fix": "RLSA-2026:66203",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-66203",
      "released": "2026-09-11T12:05:26Z"
    }
  ],
  "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"
  }
}