Vulnerability in Jupyter Jupyterlab
CVE-2025-59842
jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to version 4.4.8, links generated with LaTeX typesetters in Markdown files and Markdown cells in JupyterL…
EPSS: 0.002 (11.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
Affected products
- Jupyter Jupyterlab
- Jupyterlab — versions < 4.4.8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-59842?
- CVE-2025-59842 is a medium-severity vulnerability in Jupyter Jupyterlab, classified under Use of Web Link to Untrusted Target with window.opener Access. CVSS score: 4.3/10. Published 2025-09-26.
- How severe is CVE-2025-59842?
- Medium severity. CVSS v3 base score is 4.3 out of 10.