Project Jupyter

A cross-site scripting (XSS) vulnerability exists in JupyterLab versions 3.3.0 through 4.5.9 and 4.6.0 through 4.6.1, allowing arbitrary code execution because notebook display settings in the `overrides.json` file are not properly validated, enabling an attacker to craft a malicious file which, when imported by a user or automatically applied on a multi-tenant file system, can execute hidden instructions and compromise user data.

An authenticated user can bypass the admin-configured `excluded_paths` security control in `jupyterlab-git` versions up to 0.53.0 by exploiting a case-sensitivity flaw on case-insensitive filesystems (e.g., macOS APFS, Windows NTFS), allowing unauthorized read access to git history and file content in explicitly excluded directories.