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Fedora 43 python-jupytext CVE-2025-13465 Denial of Service Threat Advisory

fedora
Calendar Grey February 4, 2026
Dist Fedora Esm H88
Fedora 43 updates python-jupytext to fix CVE-2025-13465 which posed risks of prototype pollution in functions. Learn more.
See https://github.com/mwouts/jupytext/blob/main/CHANGELOG.md for changes in versions 1.19.0 and 1.19.1

Summary

Have you always wished Jupyter notebooks were plain text documents? Wished

you could edit them in your favorite IDE? And get clear and meaningful diffs

when doing version control? Then... Jupytext may well be the tool you're

looking for!

Jupytext is a plugin for Jupyter that can save Jupyter notebooks as

- Markdown files (or MyST Markdown files, or R Markdown or Quarto text

notebooks)

- Scripts in many languages.

Common use cases for Jupytext are:

- Doing version control on Jupyter Notebooks

- Editing, merging or refactoring notebooks in your favorite text editor

- Applying Q&A checks on notebooks.

Update Information:

See https://github.com/mwouts/jupytext/blob/main/CHANGELOG.md for changes in versions 1.19.0 and 1.19.1. This update contains a fix for CVE-2025-13465.

Topics%20covered

Topics Covered

security advisory fedora DoS fix CVE python-jupytext

Change Log

* Mon Jan 26 2026 Jerry James - 1.19.1-1 - Version 1.19.1 - Contains fix for CVE-2025-13465

References


[ 1 ] Bug #2415269 - python-jupytext-1.19.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2415269 [ 2 ] Bug #2433040 - CVE-2025-13465 python-jupytext: prototype pollution in _.unset and _.omit functions [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2433040

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-9111b2e330' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
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Name: python-jupytext
Product: Fedora 43
Version: 1.19.1
Release: 1.fc43
URL: https://jupytext.readthedocs.io/
Summary: Save Jupyter notebooks as text documents or scripts

Topics%20covered

Topics Covered

security advisory fedora DoS fix CVE python-jupytext

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