CVE-2021-32862: Debian Linux

Medium severity, CVSS 5.4. EPSS: 1.4% chance of exploitation in the next 30 days.

The GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in nbconvert. When using nbconvert to generate an HTML version of a user-controllable notebook, it is possible to inject arbitrary HTML which may lead to cross-site scripting (XSS) vulnerabilities if these HTML notebooks are served by a web server (eg: nbviewer).

Affected products

• Debian Debian Linux: version 10.0 only
• Jupyter Nbconvert: up to and including 6.2.0

Published 2022-08-18. Last modified 2026-06-17.