Cross-site Scripting (XSS)

Overview @jupyterlab/help-extension is a JupyterLab - Help Extension Affected versions of this package are vulnerable to Cross-site Scripting XSS via the handling of data-commandlinker-command and data-commandlinker-args attributes in HTML content. An attacker can execute arbitrary commands,...

CVE-2026-40171

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...

DEBIAN-CVE-2026-40171

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...

CVE-2026-40171

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...

CVE-2026-40171

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...

@fails-components/jupyter-applet-view (>=0.0.1-alpha.3, <=0.0.1-alpha.18), @fails-components/jupyter-filesystem-extension (>=0.0.1-alpha.3, <=0.0.1-alpha.18) +5 more potentially affected by CVE-2026-40171 via @jupyterlab/help-extension (>=0.1.3, <=4.4.10)

@jupyterlab/help-extension NPM version =0.1.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.1.2, =0.15.4, =0.1.0-alpha.7, =0.6.0-alpha.9 Source cves: CVE-2026-40171 Source advisory: MEND:CVE-2026-40171...

CVE-2026-40171

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...

CVE-2026-40171 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...

CVE-2026-40171 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...

CVE-2026-40171 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...

CVE-2026-40171

CVE-2026-40171 affects Jupyter components prior to fixes: Notebook 7.0.0–7.5.5, JupyterLab up to 4.5.6, and related help extensions (@jupyter-notebook/help-extension, @jupyterlab/help-extension). The root cause is a stored XSS in the CommandLinker used by the Help Extension, which can be chained ...

CVE-2026-40171

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...

CVE-2026-40171

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...

CVE-2026-40171: Improper Neutralization of Input During Web Page Generation

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...

Jupyter’s various products have cross-site scripting vulnerabilities

Jupyter Notebook is an open-source web application developed by Project Jupyter, designed for creating and sharing code along with explanatory text documents. JupyterLab is another open-source project developed by JupyterLab, offering an extensible environment for interactive and reproducible...

yii2-mcp-server has a Command Injection Issue

A flaw has been found in ArtMin96 yii2-mcp-server 1.0.2. This impacts the function yiicommandhelp/yiiexecutecommand of the file src/index.ts of the component MCP Interface. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been publish...

PT-2026-36552

A flaw has been found in ArtMin96 yii2-mcp-server 1.0.2. This impacts the function yii command help/yii execute command of the file src/index.ts of the component MCP Interface. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been...

VulnCheck KEV: CVE-2025-40554

SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that, if exploited, could allow an attacker to invoke specific actions within Web Help Desk...

@fails-components/jupyter-applet-view (>=0.0.1-alpha.3, <=0.0.1-alpha.18), @fails-components/jupyter-filesystem-extension (>=0.0.1-alpha.3, <=0.0.1-alpha.18) +3 more potentially affected by CVE-2026-40171 via @jupyterlab/help-extension (>=4.0.13, <=4.4.10)

@jupyterlab/help-extension NPM version =4.0.13, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.2.0-alpha.0, =0.6.0-alpha.9 Source cves: CVE-2026-40171 Source advisory: SNYK:JS-JUPYTERLABHELPEXTENSION-16347193...

@fails-components/jupyter-applet-view (>=0.0.1-alpha.3, <=0.0.1-alpha.18), @fails-components/jupyter-filesystem-extension (>=0.0.1-alpha.3, <=0.0.1-alpha.18) +3 more potentially affected by CVE-2026-40171 via @jupyterlab/help-extension (>=4.0.13, <=4.4.10)

@jupyterlab/help-extension NPM version =4.0.13, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.0.1-alpha.3, =0.2.0-alpha.0, =0.6.0-alpha.9 Source cves: CVE-2026-40171 Source advisory: OSV:GHSA-RCH3-82JR-F9W9...