JupyterHub has an Open Redirect Vulnerability
## Affected Version JupyterHub <= 5.4.3 ## Impact An open redirect vulnerability in JupyterHub <=5.4.3 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. ## Patches Upgrade to JupyterHub 5.4.4 ## Workarounds A deployment can apply filters on the Location header in a reverse proxy such as nginx/apache/traefik.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-33709US | medium6.1 | — | ||
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… | ||||
references
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