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Advisory record · GHSA-vvfj-2jqx-52jm

JupyterLab LaTeX typesetter links did not enforce `noopener` attribute

CVSS 2.1 LowEPSS 0.0024 · 15th percentile

Published by the GitHub Advisory Database at 26 Sept 2025, 14:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
jupyterlabPyPI<4.4.84.4.8
Identifiers
GHSA-vvfj-2jqx-52jm · BIT-jupyterlab-2025-59842 · CVE-2025-59842 · PYSEC-2026-1482
Weakness (CWE)
CWE-1022
Tags
Published
26 Sept 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

JupyterLab versions before 4.4.8 do not add the noopener attribute to links generated by LaTeX typesetters in Markdown files and cells. The source says this has no impact on default installations, and a reverse tabnabbing risk exists only with third-party LaTeX extensions that open links in a new tab. Upgrade to JupyterLab 4.4.8, which enforces noopener on these links.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
2.1 Low 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0024, the 15th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:34 UTC First seen by agentprime
  2. 31 Oct 2026, 14:34 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.