jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 3.3.0 until 4.5.10 and 4.6.2, JupyterLab allows notebook settings to be shared and applied through an overrides.json file using the Import button in the Settings Editor. In packages/notebook-extension/schema/tracker.json and packages/notebook-extension/src/index.ts, the sideBySideLeftMarginOverride and sideBySideRightMarginOverride settings are not properly validated before being inserted into style content, allowing a crafted settings file to contain instructions that execute as code instead of only changing display preferences. A user can import the malicious file, or an attacker with access to a shared settings location can plant an overrides.json that is applied automatically. The embedded code runs with the affected user's access and can read or modify notebooks and files and run code through the notebook server, including on a connected kernel. This issue is fixed in versions 4.5.10 and 4.6.2.

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

  - jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter     Notebook Architecture. From 3.3.0 until 4.5.10 and 4.6.2, JupyterLab allows notebook settings to be shared     and applied through an overrides.json file using the Import button in the Settings Editor. In     packages/notebook-extension/schema/tracker.json and packages/notebook-extension/src/index.ts, the     sideBySideLeftMarginOverride and sideBySideRightMarginOverride settings are not properly validated before     being inserted into style content, allowing a crafted settings file to contain instructions that execute     as code instead of only changing display preferences. A user can import the malicious file, or an attacker     with access to a shared settings location can plant an overrides.json that is applied automatically. The     embedded code runs with the affected user's access and can read or modify notebooks and files and run code     through the notebook server, including on a connected kernel. This issue is fixed in versions 4.5.10 and     4.6.2. (CVE-2026-73417)

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter
    Notebook Architecture. From 3.3.0 until 4.5.10 and 4.6.2, JupyterLab allows notebook settings to be shared
    and applied through an overrides.json file using the Import button in the Settings Editor. In
    packages/notebook-extension/schema/tracker.json and packages/notebook-extension/src/index.ts, the
    sideBySideLeftMarginOverride and sideBySideRightMarginOverride settings are not properly validated before
    being inserted into style content, allowing a crafted settings file to contain instructions that execute
    as code instead of only changing display preferences. A user can import the malicious file, or an attacker
    with access to a shared settings location can plant an overrides.json that is applied automatically. The
    embedded code runs with the affected user's access and can read or modify notebooks and files and run code
    through the notebook server, including on a connected kernel. This issue is fixed in versions 4.5.10 and
    4.6.2. (CVE-2026-73417)

ID	Name	Product	Family	Type	Severity
335480	Linux Distros Unpatched Vulnerability : CVE-2026-73417	Nessus	Misc.	Local	high
445129	SCA: security update for jupyterlab (GHSA-pppj-hq3g-57pj)	Tenable Cloud Security	SCA Checks	Local	high
445129	SCA: security update for jupyterlab (GHSA-pppj-hq3g-57pj)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-73417

high

Tenable Plugins

high

high

high