Vulnerability · Published Sep 26, 2025 · Assigned by GitHub_M
CVE-2025-59842JupyterLab LaTeX typesetter links did not enforce `noopener` attribute
Low 2.1
In plain English
A low-severity security flaw in jupyterlab from jupyterlab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | jupyterlab | no fix listed | DEBIAN-CVE-2025-59842 |
| Debian:14 | jupyterlab | 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3 | DEBIAN-CVE-2025-59842 |
| PyPI | jupyterlab | 4.4.8 | PYSEC-2026-1482 |
| PyPI | jupyterlab | 4.4.8 | GHSA-vvfj-2jqx-52jm |
| Ubuntu:25.10 | jupyterlab | no fix listed | UBUNTU-CVE-2025-59842 |
| Ubuntu:26.04:LTS | jupyterlab | no fix listed | UBUNTU-CVE-2025-59842 |
| Ubuntu:26.10 | jupyterlab | no fix listed | UBUNTU-CVE-2025-59842 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jupyterlab | jupyterlab | < 4.4.8 |
Weakness: CWE-1022 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N