PYSEC-2026-1706
JupyterLab vulnerable to potential authentication and CSRF tokens leak
Quick fix
PYSEC-2026-1706 — notebook: upgrade to the fixed version with the command below.
pip install --upgrade 'notebook>=7.0.7'Details
### Impact Users of JupyterLab who click on a malicious link may get their `Authorization` and `XSRFToken` tokens exposed to a third party when running an older `jupyter-server` version.
### Patches JupyterLab 4.1.0b2, 4.0.11, and 3.6.7 were patched.
### Workarounds No workaround has been identified, however users should ensure to upgrade `jupyter-server` to version 2.7.2 or newer which includes a redirect vulnerability fix.
### References
Vulnerability reported by user @davwwwx via the [bug bounty program](https://app.intigriti.com/programs/jupyter/jupyter/detail) [sponsored by the European Commission](https://commission.europa.eu/news/european-commissions-open-source-programme-office-starts-bug-bounties-2022-01-19_en) and hosted on the [Intigriti platform](https://www.intigriti.com/).
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-44cc-43rp-5947[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2024-22421[ADVISORY]
- https://github.com/jupyterlab/jupyterlab/commit/19bd9b96cb2e77170a67e43121637d0b5619e8c6[WEB]
- https://github.com/jupyterlab/jupyterlab/commit/1ef7a4fa0202ebdf663e1cc0b45c8813a34a0b96[WEB]
- https://github.com/jupyterlab/jupyterlab/commit/fccd83dc4441da0384ee3fd1322c3b2d9ad4caaa[WEB]
- https://github.com/jupyterlab/jupyterlab[PACKAGE]
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQJKNRDRFMKGVRIYNNN6CKMNJDNYWO2H[WEB]
- https://pypi.org/project/notebook[PACKAGE]
- https://github.com/advisories/GHSA-44cc-43rp-5947[ADVISORY]