JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

JupyterLab's PyPI extension manager runs python -m pip uninstall with the extension name taken from the request body. ExtensionHandler.post validates the name for cmd=install but not for cmd=uninstall, so a name that begins with - reaches the command line and pip reads it as an option rather than...

JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

JupyterLab's PyPI extension manager runs python -m pip uninstall with the extension name taken from the request body. ExtensionHandler.post validates the name for cmd=install but not for cmd=uninstall, so a name that begins with - reaches the command line and pip reads it as an option rather than...

EUVD-2026-89459

JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs...

Linux Distros Unpatched Vulnerability : CVE-2026-102904

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5....

OESA-2026-4168 python-jupyterlab security update

JupyterLab is the next-generation user interface for Project Jupyter offering all the familiar building blocks of the classic Jupyter Notebook notebook, terminal, text editor, file browser, rich outputs, etc. in a flexible and powerful user interface. Security Fixes: JupyterLab before 4.5.9...

OESA-2026-4167 python-jupyterlab security update

JupyterLab is the next-generation user interface for Project Jupyter offering all the familiar building blocks of the classic Jupyter Notebook notebook, terminal, text editor, file browser, rich outputs, etc. in a flexible and powerful user interface. Security Fixes: JupyterLab versions...

DEBIAN-CVE-2026-102904

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904

In JupyterLab versions 4.0.0 through 4.5.11 and 4.6.4, an argument injection vulnerability exists in the PyPI Extension Manager . The ExtensionHandler.post method validates names for installation but fails to reject option-like values during uninstallation, passing them directly to PyPIExtensionM...

CVE-2026-102904 JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904 JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

CVE-2026-102904 JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installatio...

PT-2026-102922

Name of the Vulnerable Software and Affected Versions JupyterLab versions 4.0.0 through 4.5.10 JupyterLab versions 4.6.0 through 4.6.3 Description In the PyPI Extension Manager, the ExtensionHandler.post function validates extension names during installation but fails to reject option-like values...

PYSEC-2026-3670 JupyterLab: PyPI extension blocklist package-name canonicalization bypass

JupyterLab's PyPI extension manager enforces blockedextensionsuris by comparing the requested install name to blocklist entries with a custom string normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as...

JupyterLab: PyPI extension blocklist package-name canonicalization bypass

JupyterLab's PyPI extension manager enforces blockedextensionsuris by comparing the requested install name to blocklist entries with a custom string normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as...

BIT-JUPYTERLAB-2026-73416 jupyterlab: PyPI extension blocklist package-name canonicalization bypass

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.5.0 until 4.5.10 and 4.6.2, in jupyterlab/extensions/manager.py and jupyterlab/extensions/pypi.py, JupyterLab's PyPI extension manager enforces...

PT-2026-80643

JupyterLab's PyPI extension manager enforces blocked extensions uris by comparing the requested install name to blocklist entries with a custom string normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as...

CVE-2026-73416

A flaw was found in jupyterlab. The PyPI Python Package Index extension manager uses a custom normalization process for package names that is weaker than the official PyPI canonicalization. This allows an authenticated user to bypass blocklist restrictions by using an alternative spelling of a...