JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output sanitization, and execute script in the authenticated JupyterLab origin without executing the cell. Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4.

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 JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and
    from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled
    cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and
    pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output
    sanitization, and execute script in the authenticated JupyterLab origin without executing the cell.
    Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in
    JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4. (CVE-2026-102831)

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 JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and     from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled     cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and     pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output     sanitization, and execute script in the authenticated JupyterLab origin without executing the cell.
    Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in     JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4. (CVE-2026-102831)

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

ID	Name	Product	Family	Type	Severity
473749	Chainguard: jupyterhub-k8s-singleuser-sample: security update to 4.4.2-r7	Tenable Cloud Security	Chainguard Local Security Checks	Local	high
473749	Chainguard: jupyterhub-k8s-singleuser-sample: security update to 4.4.2-r7	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	high
351460	Linux Distros Unpatched Vulnerability : CVE-2026-102831	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-102831

high

Tenable Plugins

high

high

high