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
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | jupyter-server-proxy | < 3.2.3, >= 4.0.0, < 4.1.1 | 3.2.3, 4.1.1 |
References
- https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-w3vc-fx9p-wp4v
- https://nvd.nist.gov/vuln/detail/CVE-2024-28179
- 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
- https://github.com/jupyterhub/jupyter-server-proxy/blob/9b624c4d9507176334b46a85d94a4aa3bcd29bed/jupyter_server_proxy/handlers.py#L433
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server-proxy/PYSEC-2024-234.yaml
- https://github.com/advisories/GHSA-w3vc-fx9p-wp4v
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-306- Platform
- Python (PyPI)
- Package
jupyter-server-proxy- Disclosed
- 20.03.2024
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w3vc-fx9p-wp4v - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2024-234 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: jupyter-server-proxy
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 01.2022 06.2024
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- Medium 2
Disclosures per year
- 2022: 1
- 2023: 0
- 2024: 2
- 2025: 0
- 2026: 0
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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 this entry
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