CVE-2021-32862

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).
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub_MCNA
7.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 66%
VendorProductVersion
jupyternbconvert
𝑥
≤ 6.2.0
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nbconvert
bullseye
vulnerable
bullseye (security)
5.6.1-3+deb11u1
fixed
bookworm
6.5.3-3
fixed
sid
7.16.4-2
fixed
trixie
7.16.4-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nbconvert
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
dne
trusty
dne
Common Weakness Enumeration
References
https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq
https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm
https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html
https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq
https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm
https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00004.html