Detections
Analytics
Jupyterlab Python Library < 4.5.10 / 4.6.x < 4.6.2 (CVE-2026-73626)
high Nessus Plugin ID 342599
Synopsis
A Python library installed on the remote host is affected by a vulnerability.Description
jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. The detected version of the JupyterLab Python package is prior to 4.5.10, or 4.6.x prior to 4.6.2. It is, therefore, affected by a vulnerability:- JupyterLab contains an allowlist/blocklist enforcement gap in PyPIExtensionManager.install(). A missing 'await' caused the is_install_allowed coroutine to never execute, so the extension allowlist/blocklist check was not enforced for direct callers of install(). The stock JupyterLab HTTP API and Extension Manager UI are not affected, as they perform a separate, correctly awaited check. (CVE-2026-73626)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to Jupyterlab version 4.5.10, 4.6.2 or later.See Also
Plugin Details
Severity: High
ID: 342599
File Name: jupyterlab_python_lib_4_5_10_CVE-2026-73626.nasl
Version: 1.1
Type: Local
Agent: windows, macosx, unix
Family: Misc.
Published: 9/3/2026
Updated: 9/3/2026
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.2
CVSS v2
Risk Factor: High
Base Score: 7.1
Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-73626
CVSS v3
Risk Factor: High
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:jupyter:jupyterlab
Patch Publication Date: 7/22/2026
Vulnerability Publication Date: 7/21/2026
Reference Information
CVE: CVE-2026-73626