JupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, remote-server URLs were inserted into the server-selection dialog and Welcome view without safe encoding. An attacker who convinces a user to submit a crafted URL can execute JavaScript in the Welcome renderer and abuse its privileged IPC bridge to execute arbitrary code with the user’s privileges. The Welcome view also unsafely renders RSS news-feed titles; exploitation through this separate input path requires control over content delivered through the application’s Jupyter Blog feed or its cached feed data, rather than submission of a remote-server URL. This issue affects all supported platforms and is fixed in version 4.6.2-1.
History

Fri, 06 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Jupyter
Jupyter jupyterlab-desktop
Vendors & Products Jupyter
Jupyter jupyterlab-desktop

Fri, 06 Nov 2026 20:45:00 +0000

Type Values Removed Values Added
Description JupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, remote-server URLs were inserted into the server-selection dialog and Welcome view without safe encoding. An attacker who convinces a user to submit a crafted URL can execute JavaScript in the Welcome renderer and abuse its privileged IPC bridge to execute arbitrary code with the user’s privileges. The Welcome view also unsafely renders RSS news-feed titles; exploitation through this separate input path requires control over content delivered through the application’s Jupyter Blog feed or its cached feed data, rather than submission of a remote-server URL. This issue affects all supported platforms and is fixed in version 4.6.2-1.
Title JupyterLab Desktop: Cross-Site Scripting (XSS) leading to Remote Code Execution on Connect URL
Weaknesses CWE-116
CWE-79
CWE-94
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-06T20:35:53.731Z

Updated: 2026-11-06T20:35:53.731Z

Reserved: 2026-09-29T13:00:21.387Z

Link: CVE-2026-102530

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-06T21:17:05.510

Modified: 2026-11-06T21:17:05.510

Link: CVE-2026-102530

cve-icon Redhat

No data.