{
  "cveId": "CVE-2026-66010",
  "url": "https://patchblox.com/security/cve/CVE-2026-66010",
  "summary": "CVE-2026-66010 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-66010, released July 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "node-dompurify: DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HA...",
  "description": "DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.",
  "published": "2026-07-24T13:18:28Z",
  "severity": "low",
  "epss": 0.00215,
  "epssPercentile": 0.12004,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-dompurify",
      "release": "Debian 14",
      "fixedVersion": "3.4.12\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-66010",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-66010",
      "released": "2026-07-25T13:43:44Z"
    },
    {
      "platform": "linux",
      "product": "python-jupytext",
      "release": "Fedora 43",
      "fixedVersion": "1.19.6-1.fc43",
      "fix": "FEDORA-2026-3942AB86FD",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-3942ab86fd",
      "released": "2026-10-05T19:44:23Z"
    },
    {
      "platform": "linux",
      "product": "python-jupytext-doc",
      "release": "Fedora 43",
      "fixedVersion": "1.19.6-1.fc43",
      "fix": "FEDORA-2026-3942AB86FD",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-3942ab86fd",
      "released": "2026-10-05T19:44:23Z"
    },
    {
      "platform": "linux",
      "product": "python3-jupyterlab-jupytext",
      "release": "Fedora 43",
      "fixedVersion": "1.19.6-1.fc43",
      "fix": "FEDORA-2026-3942AB86FD",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-3942ab86fd",
      "released": "2026-10-05T19:44:23Z"
    },
    {
      "platform": "linux",
      "product": "python3-jupytext",
      "release": "Fedora 43",
      "fixedVersion": "1.19.6-1.fc43",
      "fix": "FEDORA-2026-3942AB86FD",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-3942ab86fd",
      "released": "2026-10-05T19:44:23Z"
    }
  ],
  "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"
  }
}