What’s Vulnerable › Vulnerabilities

CVE-2019-10856

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-04 · updated 2026-06-17
• Weakness: CWE-601

Description

In Jupyter Notebook before 5.7.8, an open redirect can occur via an empty netloc. This issue exists because of an incomplete fix for CVE-2019-10255.

Affected products

• jupyter notebook: before 5.7.8 — fixed in 5.7.8

How to fix

Upgrade to a fixed version: jupyter notebook 5.7.8. Check the vendor advisory for mitigations.

References

• https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4
• https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea
• https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4
• https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea

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