CVE-2021-32798

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.

How to fix CVE-2021-32798

To remediate CVE-2021-32798, upgrade the affected package to a fixed version below.

• —upgrade to 5.7.11 or later
• —upgrade to 5.7.11 or later
• —no fix listed
• —upgrade to 5.7.11 or later
• —upgrade to 79fc76e890a8ec42f73a3d009e44ef84c14ef0d5 or later

Is CVE-2021-32798 being exploited?

Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

• >= 5.7.0, < 5.7.11, >= 6.4.0, < 6.4.1
• >= 5.7.0, < 5.7.11, >= 6.4.0, < 6.4.1
• from 0
• from 0, < 5.7.11
• from 0, < 79fc76e890a8ec42f73a3d009e44ef84c14ef0d5 | >= 5.7.0, < 5.7.11

CVSS scores

References (6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-32798
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-32798
• PATCHgithub.com/jupyter/notebook
• WEBgithub.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5