Description

JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to version 5.4.4, an open redirect vulnerability in JupyterHub allows attackers to construct links which, when clicked, take users to the JupyterHub login page, after which they are sent to an arbitrary attacker-controlled site outside JupyterHub instead of a JupyterHub page, bypassing JupyterHub's check to prevent this. This issue has been patched in version 5.4.4.

INFO

Published Date :

2026-04-03T22:00:46.703Z

Last Modified :

2026-04-06T17:33:47.412Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33709 vulnerability.

Vendors Products
Jupyterhub
  • Jupyterhub
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33709.

URL Resource
https://github.com/jupyterhub/jupyterhub/releases/tag/5.4.4 cve-icon cve-icon
https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-3vff-hjqv-m7h8 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability