Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jupyterhub | jupyterhub | >= 1.0.0, < 1.5.0 - jupyterhub (pip), < 1.2.0 - jupyterhub (helm) | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | jupyterhub | 2.0.0+ds1-1 | — |
| Debian 13 | jupyterhub | 2.0.0+ds1-1 | — |
| Debian 12 | jupyterhub | 2.0.0+ds1-1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | jupyterhub | >= 1.0.0, < 1.5.0 | 1.5.0 | GHSA-cw7p-q79f-m2v7 |