{
  "cveId": "CVE-2026-73416",
  "url": "https://patchblox.com/security/cve/CVE-2026-73416",
  "summary": "CVE-2026-73416 is fixed in jupyterlab on 1 platform by DEBIAN-CVE-2026-73416 (version 4.4.10\u002Bds1\u002B~3.1.0\u002B~0.16.6\u002B~cs1.4.4-4), released August 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "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 4.5.0 until 4.5.10 and 4.6.2, in jupyterlab/extensions/manager.py and jupyterlab/extensions/pypi.py, JupyterLab\u0027s PyPI extension manager enforces blocked_extensions_uris by comparing requested install names to blocklist entries with custom normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as JupyterLab.Git for a blocklisted package such as jupyterlab-git, and JupyterLab accepts the install request even though pip resolves the variant to the same package. Security impact requires an allowlist or blocklist intended to restrict package installation, the PyPI Extension Manager, and kernels and terminals that are disabled or delegated to remote hosts. The bypass lets an authenticated user install a prohibited extension, defeat integrity restrictions, and affect availability without gaining new read access. This issue is fixed in versions 4.5.10 and 4.6.2.",
  "published": "2026-08-13T22:17:25Z",
  "severity": "",
  "epss": 0.00664,
  "epssPercentile": 0.52007,
  "priority": "Routine",
  "priorityTier": 4,
  "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~cs1.4.4-4",
      "fix": "DEBIAN-CVE-2026-73416",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-73416",
      "released": "2026-08-25T00:08:54Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}