CVE-2025-59842: PYSEC-2026-1482 - JupyterLab LaTeX typesetter links did not enforce `noopener` attribute

CVE-2025-59842 · Severity: medium · CVSS 4 · Published 2026-07-07

JupyterLab LaTeX typesetter links did not enforce `noopener` attribute

Technologies: jupyterlab (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-59842 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-59842 being exploited in the wild.
How severe is CVE-2025-59842?
Medium severity, with a CVSS score of 4, published 7 July 2026.
Which products and versions are affected?
jupyterlab (PyPI) ECOSYSTEM:introduced=0,fixed=4.4.8.
Is there a fix for CVE-2025-59842?
Yes. jupyterlab (PyPI): upgrade to 4.4.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-59842?
Check whether you run jupyterlab (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • jupyterlab (PyPI): upgrade to 4.4.8 or later
    pip install "jupyterlab>=4.4.8"

Affected products

  • jupyterlab (PyPI) ECOSYSTEM:introduced=0,fixed=4.4.8

Identifiers

  • CVE-2025-59842
  • GHSA-vvfj-2jqx-52jm
  • PYSEC-2026-1482

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.