CVE-2025-59842
mediumpriority · track · 17EPSS 0.002 · 15 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 0.5–4.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- GHSA-vvfj-2jqx-52jmJupyterLab LaTeX typesetter links did not enforce `noopener` attribute2025-09-26ghsa · osvUS
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). For consistency with handling on other links, new versions of JupyterLab will enforce `noopener` and `target=_blank` on all links generated by typesetters. The former will harden the resilience of JupyterLab to extensions with lack of secure defaults in link rendering, and the latter will improve user experience by preventing accidental state loss when clicking on links rendered by LaTeX typesetters. ### Impact Since the official LaTeX typesetter extensions for JupyterLab: `jupyterlab-mathjax` (default), `jupyterlab-mathjax2` and `jupyterlab-katex` do not include the `target=_blank`, there is no impact for JupyterLab users. ### Patches JupyterLab 4.4.8 ### Workarounds No workarounds are necessary. ### References None
- BIT-jupyterlab-2025-59842JupyterLab LaTeX typesetter links did not enforce `noopener` attribute2025-10-01vendor · osvUS
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.
- PYSEC-2026-1482JupyterLab LaTeX typesetter links did not enforce `noopener` attribute2026-07-07vendor · osvUS
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). For consistency with handling on other links, new versions of JupyterLab will enforce `noopener` and `target=_blank` on all links generated by typesetters. The former will harden the resilience of JupyterLab to extensions with lack of secure defaults in link rendering, and the latter will improve user experience by preventing accidental state loss when clicking on links rendered by LaTeX typesetters. ### Impact Since the official LaTeX typesetter extensions for JupyterLab: `jupyterlab-mathjax` (default), `jupyterlab-mathjax2` and `jupyterlab-katex` do not include the `target=_blank`, there is no impact for JupyterLab users. ### Patches JupyterLab 4.4.8 ### Workarounds No workarounds are necessary. ### References None
also known as (7)
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sources
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references (8)
External citations — patches, advisories, analysis.
- https://github.com/jupyterlab/jupyterlab/commit/88ef373039a8cc09f27d3814382a512d9033675ccnnvd
- https://github.com/jupyterlab/jupyterlab/releasesPatchcnnvd
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-vvfj-2jqx-52jmcnnvd
- https://vigilance.fr/vulnerability/jupyterlab-information-disclosure-via-LaTeX-Typesetters-Noopener-Attribute-48394cnnvd
- https://github.com/jupyterlab/jupyterlab/commit/88ef373039a8cc09f27d3814382a512d9033675cenisa_euvd
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-vvfj-2jqx-52jmenisa_euvd
- https://github.com/jupyterlab/jupyterlab/commit/88ef373039a8cc09f27d3814382a512d9033675cPatchnvd
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-vvfj-2jqx-52jmPatchThird Party Advisorynvd
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