Vulnerability 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jupyter | Jupyterhub | >= 1.0.0, < 1.5.0 |
Related Weaknesses (CWE)
References
- https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc5333PatchThird Party Advisory
- https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7Third Party Advisory
- https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc5333PatchThird Party Advisory
- https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7Third Party Advisory
FAQ
What is CVE-2021-41247?
CVE-2021-41247 is a vulnerability with a CVSS score of 3.5 (LOW). 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 ...
How severe is CVE-2021-41247?
CVE-2021-41247 has been rated LOW with a CVSS base score of 3.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41247?
Check the references section above for vendor advisories and patch information. Affected products include: Jupyter Jupyterhub.