Security Advisory

CVE-2026-42266

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-13 15:08:49

Last updated 2026-07-22 12:08:42

Assigner GitHub_M

CVSS score 8.8

State PUBLISHED

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.

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