CVE-2024-22420: 
Python vulnerability analysis and mitigation

JupyterLab, an extensible environment for interactive and reproducible computing based on Jupyter Notebook and Architecture, was found to contain a security vulnerability (CVE-2024-22420) that affects versions 4.0.0 through 4.0.10. The vulnerability was disclosed on January 19, 2024, and requires user interaction through opening a malicious Markdown file using JupyterLab's preview feature (GitHub Advisory).

The vulnerability is classified as a Cross-site Scripting (XSS) issue (CWE-79) with a CVSS v3.1 base score of 6.5 (Medium). It has two different severity assessments: GitHub rates it as CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (Medium, 6.5), while NVD rates it as CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N (Medium, 6.1) (NVD, GitHub Advisory).

When exploited, the vulnerability allows a malicious user to access any data that the attacked user has access to and perform arbitrary requests acting as the attacked user. This impacts both JupyterLab (versions 4.0.0-4.0.10) and Jupyter Notebook (versions 7.0.0-7.0.6) (GitHub Advisory).

The vulnerability has been patched in JupyterLab version 4.0.11 and Jupyter Notebook version 7.0.7. For users unable to upgrade, a workaround is available by disabling the table of contents extension using the command 'jupyter labextension disable @jupyterlab/toc-extension:registry'. Users can verify the plugin's disabled status by running 'jupyter labextension list' (GitHub Advisory, Fedora Update).

The vulnerability was reported through the bug bounty program sponsored by the European Commission and hosted on the Intigriti platform. Major distributions like Fedora have responded by releasing security updates to address the vulnerability (GitHub Advisory, Fedora Update).