CVE-2019-10856: Jupyter Notebook

Medium severity, CVSS 6.1. EPSS: 1.3% chance of exploitation in the next 30 days.

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)

Published 2019-04-04. Last modified 2026-06-17.