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CVE-2021-41247

Published: 4 November 2021

JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place. Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment. The only workaround is to make sure that only one JupyterLab tab is open when you log out.

Priority

Low

CVSS 3 base score: 7.5

Status

Package Release Status
jupyterhub
Launchpad, Ubuntu, Debian
trusty Ignored
(out of standard support)
upstream
Released (2.0.0+ds1-1)
xenial Ignored
(out of standard support)