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Vulnerabilities

Vulnerability · CVE-2025-59842

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture.

Published Sep 26, 2025 · catalog updated Sep 26, 2025 · jupyterlab is an extensible

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-59842. EPSS is 0.24%. Act only if a listed version of jupyterlab is an extensible is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (jupyterlab is an extensible).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low2.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.24%
Remediation
Version ranges on file
Affected products
vendor jupyterlab jupyterlab < 4.4.8

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 JupyterLab and Jupyter Notebook did not include the noopener attribute. This is deemed to have no impact on the default installations. Theoretically users of third-party LaTeX-rendering extensions could find themselves vulnerable to reverse tabnabbing attacks if links generated by those extensions included target=_blank (no such extensions are known at time of writin

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor jupyterlab jupyterlab < 4.4.8< 4.4.8

How to fix CVE-2025-59842

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-59842. EPSS is 0.24%. Act only if a listed version of jupyterlab is an extensible is installed.

Which versions are affected?

Compare what you have installed with jupyterlab jupyterlab < 4.4.8 < 4.4.8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 26, 2025 · EUVD

    Detected

    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 JupyterLab and Jupyter Notebook did not include the noopener attribute. This is deemed to have no impact on the default installations. Theoretically users of third-party

  2. Sep 26, 2025 · EUVD

    Updated

    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 JupyterLab and Jupyter Notebook did not include the noopener attribute. This is deemed to have no impact on the default installations. Theoretically users of third-party

Sources

  • CVE.orgVulnerability recordCVE-2025-59842

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-59842

    30-day exploitation probability 0.24%

    first.org
  • EUVDVulnerability recordEUVD-2025-31350

    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 JupyterLab and Jupyter Notebook did not include t

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 29, 2026
  • CVE.orgOct 23, 2026
  • EUVDOct 23, 2026