cvedb.io
CVE-2026-42266
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-05-13T16:16:47.017 · Last modified 2026-06-30T03:19:36.137

Summary

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.

Affected products

jupyter — jupyterlab

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.