JupyterLab LaTeX typesetter links did not enforce `noopener` attribute
CVE-2025-59842

2.1LOW

Key Information:

Vendor

Jupyterlab

Status
Jupyterlab
Vendor
CVE Published:
26 September 2025

What is 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 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 writing) and they were to click on a link generated in LaTeX (typically visibly different from other links). This issue has been patched in version 4.4.8.

Affected Version(s)

jupyterlab < 4.4.8

References

https://github.com/jupyterlab/jupyterlab/security/advisor...
x_refsource_CONFIRM
https://github.com/jupyterlab/jupyterlab/commit/88ef37303...
x_refsource_MISC

CVSS V4

Score:
2.1
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-59842 : Reverse Tabnabbing Vulnerability in JupyterLab by Project Jupyter