What’s Vulnerable › Vulnerabilities
CVE-2019-10255
- Severity: medium (CVSS 6.1 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2019-03-28 · updated 2026-06-17
- Weakness: CWE-601
Description
An Open Redirect vulnerability for all browsers in Jupyter Notebook before 5.7.7 and some browsers (Chrome, Firefox) in JupyterHub before 0.9.5 allows crafted links to the login page, which will redirect to a malicious site after successful login. Servers running on a base_url prefix are not affected.
Affected products
- jupyterhub: before 0.9.5 — fixed in 0.9.5
- jupyter notebook: before 5.7.7 — fixed in 5.7.7
How to fix
Upgrade to a fixed version: jupyterhub 0.9.5; jupyter notebook 5.7.7. Check the vendor advisory for mitigations.
References
- https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4
- https://github.com/jupyter/notebook/commit/08c4c898182edbe97aadef1815cce50448f975cb
- https://github.com/jupyter/notebook/commit/70fe9f0ddb3023162ece21fbb77d5564306b913b
- https://github.com/jupyter/notebook/commit/d65328d4841892b412aef9015165db1eb029a8ed
- https://github.com/jupyter/notebook/compare/05aa4b2...16cf97c
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UP5RLEES2JBBNSNLBR65XM6PCD4EMF7D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMDPJBVXOVO6LYGAT46VZNHH6JKSCURO/
- https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4
- https://github.com/jupyter/notebook/commit/08c4c898182edbe97aadef1815cce50448f975cb
- https://github.com/jupyter/notebook/commit/70fe9f0ddb3023162ece21fbb77d5564306b913b
- https://github.com/jupyter/notebook/commit/d65328d4841892b412aef9015165db1eb029a8ed
- https://github.com/jupyter/notebook/compare/05aa4b2...16cf97c
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