Vulnerability 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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jupyter | Nbconvert | <= 6.2.0 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwqExploitThird Party Advisory
- https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wmBroken Link
- https://lists.debian.org/debian-lts-announce/2023/06/msg00003.htmlMailing ListThird Party Advisory
- https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwqExploitThird Party Advisory
- https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wmBroken Link
- https://lists.debian.org/debian-lts-announce/2023/06/msg00003.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/09/msg00004.html
FAQ
What is CVE-2021-32862?
CVE-2021-32862 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 po...
How severe is CVE-2021-32862?
CVE-2021-32862 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32862?
Check the references section above for vendor advisories and patch information. Affected products include: Jupyter Nbconvert, Debian Debian Linux.