What is CVE-2021-32797?

CVE-2021-32797 is a high-severity vulnerability in Jupyterlab, classified under Cross-site Scripting. CVSS score: 7.4/10. Published 2021-08-09.

How severe is CVE-2021-32797?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2021-32797 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Jupyterlab

CVE-2021-32797

JupyterLab is a user interface for Project Jupyter which will eventually replace the classic Jupyter Notebook. In affected versions untrusted notebook can execute code on load. In particular JupyterLab doesn’t sanitize the action attribute…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (75.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

Affected products

Jupyterlab — versions >= 3.1.0, < 3.1.4, >= 3.0.0, < 3.0.17, >= 2.3.0, < 2.3.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/jupyterlab/jupyterlab/security/advisories/GHSA-4952-p58q-6crx (x_refsource_CONFIRM)
github.com/jupyterlab/jupyterlab/commit/504825938c0abfa2fb8ff8d529308830a5ae42ed (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-32797?: CVE-2021-32797 is a high-severity vulnerability in Jupyterlab, classified under Cross-site Scripting. CVSS score: 7.4/10. Published 2021-08-09.
How severe is CVE-2021-32797?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2021-32797 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.