CVE-2021-32862
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).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 6.5.1-1 |
| debian | bullseye | fixed | 5.6.1-3+deb11u1 |
| debian | forky | fixed | 6.5.1-1 |
| debian | sid | fixed | 6.5.1-1 |
| debian | trixie | fixed | 6.5.1-1 |
References
- https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq
- https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm
- https://nvd.nist.gov/vuln/detail/CVE-2021-32862
- https://github.com/jupyter/nbconvert
- https://github.com/pypa/advisory-database/tree/main/vulns/nbconvert/PYSEC-2022-249.yaml
- https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html
- https://security-tracker.debian.org/tracker/CVE-2021-32862
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.