Vulnerability CVE-2024-28179
Published: 2024-03-20

Description:
Jupyter Server Proxy allows users to run arbitrary external processes alongside their Jupyter notebook servers and provides authenticated web access. Prior to versions 3.2.3 and 4.1.1, Jupyter Server Proxy did not check user authentication appropriately when proxying websockets, allowing unauthenticated access to anyone who had network access to the Jupyter server endpoint. This vulnerability can allow unauthenticated remote access to any websocket endpoint set up to be accessible via Jupyter Server Proxy. In many cases, this leads to remote unauthenticated arbitrary code execution, due to how affected instances use websockets. The websocket endpoints exposed by `jupyter_server` itself is not affected. Projects that do not rely on websockets are also not affected. Versions 3.2.3 and 4.1.1 contain a fix for this issue.

 References:
https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-w3vc-fx9p-wp4v
https://github.com/jupyterhub/jupyter-server-proxy/commit/764e499f61a87641916a7a427d4c4b1ac3f321a9
https://github.com/jupyterhub/jupyter-server-proxy/commit/bead903b7c0354b6efd8b4cde94b89afab653e03
https://github.com/jupyterhub/jupyter-server-proxy/blob/9b624c4d9507176334b46a85d94a4aa3bcd29bed/jupyter_server_proxy/handlers.py#L433
Copyright 2026, cxsecurity.com

 

Back to Top