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@jupyterlab/help-extension vulnerabilities

Vulnerabilities published for @jupyterlab/help-extension in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 1

  1. CVE-2026-40171

    High · CVSS 8.4EPSS 0.48%Fix available

    Jupyter Notebook and JupyterLab token theft via stored XSS in help command linker

    In Jupyter Notebook versions 7.0.0 through 7.5.5, JupyterLab versions 4.5.6 and earlier, and the corresponding @jupyter-notebook/help-extension and @jupyterlab/help-extension packages before 7.5.6 and 4.5.7, a stored cross-site scripting issue in the help command linker can be chained with attacker-controlled notebook content to steal authentication tokens with a single click. An attacker can craft a malicious notebook file containing elements that appear indistinguishable from legitimate controls and trigger execution when a user interacts with them. Successful exploitation allows theft of the user's authentication token and complete takeov

    • Update to 4.5.7
    Published Updated

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