CVE-2021-32798

Public Exploit
Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in notebook

Description

The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on load. Jupyter Notebook uses a deprecated version of Google Caja to sanitize user inputs. A public Caja bypass can be used to trigger an XSS when a victim opens a malicious ipynb document in Jupyter Notebook. The XSS allows an attacker to execute arbitrary code on the victim computer using Jupyter APIs.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.30%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: jupyter notebook
Published at:
Updated at:

References

Link Tags
https://github.com/jupyter/notebook/security/advisories/GHSA-hwvq-6gjx-j797 third party advisory
https://github.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-32798?
CVE-2021-32798 has been scored as a critical severity vulnerability.
How to fix CVE-2021-32798?
To fix CVE-2021-32798, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32798 being actively exploited in the wild?
It is possible that CVE-2021-32798 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32798?
CVE-2021-32798 affects jupyter notebook.
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