jupyterlab: JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Arc...
CVE-2026-42266 is fixed in jupyterlab on 1 platform by DEBIAN-CVE-2026-42266 (version 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3), released May 13, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| jupyterlab · Debian 14 | 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3 | DEBIAN-CVE-2026-42266 | May 13, 2026 |
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