{
  "cveId": "CVE-2026-42266",
  "url": "https://patchblox.com/security/cve/CVE-2026-42266",
  "summary": "CVE-2026-42266 is fixed in jupyterlab on 1 platform by DEBIAN-CVE-2026-42266 (version 4.4.10\u002Bds1\u002B~3.1.0\u002B~0.16.6\u002B~cs1.4.4-3), released May 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "jupyterlab: JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Arc...",
  "description": "JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.",
  "published": "2026-05-13T16:16:47Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.05652,
  "epssPercentile": 0.93019,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "jupyterlab",
      "release": "Debian 14",
      "fixedVersion": "4.4.10\u002Bds1\u002B~3.1.0\u002B~0.16.6\u002B~cs1.4.4-3",
      "fix": "DEBIAN-CVE-2026-42266",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42266",
      "released": "2026-05-13T16:16:47Z"
    }
  ],
  "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"
  }
}