CVE-2025-59842

Medium

Description

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to version 4.4.8, links generated with LaTeX typesetters in Markdown files and Markdown cells in JupyterLab and Jupyter Notebook did not include the noopener attribute. This is deemed to have no impact on the default installations. Theoretically users of third-party LaTeX-rendering extensions could find themselves vulnerable to reverse tabnabbing attacks if links generated by those extensions included target=_blank (no such extensions are known at time of writing) and they were to click on a link generated in LaTeX (typically visibly different from other links). This issue has been patched in version 4.4.8.

SeverityMedium
CVSS4.3
Exploit probability—
ProductJupyterlab
PublishedSep 26, 2025
First seenSep 26, 2025
Weakness typeCWE-1022CWE-1022

How to fix

Update
  • jupyter jupyterlab4.4.8 or later
  • jupyterlab4.4.8 or later

Affected products

ProductAffected versionsFixed in
jupyter jupyterlabv < 4.4.84.4.8
jupyterlabPyPIv < 4.4.84.4.8

Check your version

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