The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 takeover of the Jupyter session through the REST API, including reading     files, creating or modifying files, accessing kernels to execute arbitrary code, and creating terminals     for shell access. This issue has been fixed in Notebook 7.5.6, JupyterLab 4.5.7, @jupyter-notebook/help-     extension 7.5.6, and @jupyterlab/help-extension 4.5.7. As a workaround, disable the affected help     extensions or set allowCommandLinker to false in the sanitizer configuration. (CVE-2026-40171)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-40171

high Nessus Plugin ID 313260

Version 1.2