CVE-2021-32862

HIGH

nbconvert < 6.2.0 - Cross-Site Scripting via HTML Notebook Generation

Title source: llm

Description

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).

References (4)

Core 4

Core References

Mailing List, Third Party Advisory mailing-list

https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html

Mailing List

https://lists.debian.org/debian-lts-announce/2024/09/msg00004.html

Exploit, Third Party Advisory

https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq

Broken Link

https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm

Scores

CVSS v3 7.5

EPSS 0.0110

EPSS Percentile 62.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-79

Status published

Products (3)

debian/debian_linux 10.0

jupyter/nbconvert < 6.2.0

pypi/nbconvert 0 - 6.5.1PyPI

Published Aug 18, 2022

Tracked Since Feb 18, 2026