HIGH8.8

PYSEC-2026-164

Quick fix

PYSEC-2026-164 — jupyterlab: upgrade to the fixed version with the command below.

pip install --upgrade 'jupyterlab>=4.5.7'

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/jupyterlab

Introduced in: 4.0.0Fixed in: 4.5.7

Fixpip install --upgrade 'jupyterlab>=4.5.7'

References

https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html[WEB]
https://jupyterlab.readthedocs.io/en/latest/user/extensions.html#extension-manager-implementations[WEB]
https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-37w4-hwhx-4rc4[ADVISORY]
https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.7[FIX]