SSRF vulnerability in jupyter-server-proxy
Impact
What kind of vulnerability is it? Server-Side Request Forgery ( SSRF )
Who is impacted? Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled.
A lack of input validation allowed authenticated clients to proxy requests to other hosts, bypassing the allowed_hosts check. Because authentication is required, which already grants permissions to make the same requests via kernel or terminal execution, this is considered low to moderate severity.
Patches
Has the problem been patched? What versions should users upgrade to?
Upgrade to 3.2.1, or apply the patch https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch
For more information
If you have any questions or comments about this advisory:
- Open a topic on our forum
- Email the Jupyter security team at security@ipython.org
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | jupyter-server-proxy | < 3.2.1 | 3.2.1 |
References
- https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch
- https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw
- https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb
- https://nvd.nist.gov/vuln/detail/CVE-2022-21697
- https://github.com/jupyterhub/jupyter-server-proxy
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server-proxy/PYSEC-2022-16.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N- Weakness (CWE)
CWE-918- Platform
- Python (PyPI)
- Package
jupyter-server-proxy- Disclosed
- 25.01.2022
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2022-16 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-gcv9-6737-pjqw - 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
-
SSRF vulnerability in jupyter-server-proxy this entry
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