CVE-2026-73415
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
JupyterLab prior to 4.5.10 and 4.6.2 contains a cross-site scripting vulnerability in the ImageViewer component. A specially crafted SVG image opened in the image viewer and then in a new browser tab retains an executable same-origin context, allowing arbitrary code execution on the JupyterLab server.
Risk Assessment
An attacker could execute arbitrary code on the JupyterLab server, potentially leading to data theft, notebook modification, or server takeover.
Recommendation
Update JupyterLab to version 4.5.10 or 4.6.2 or later.
Original NVD description (English source)
jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to 4.5.10 and 4.6.2, in packages/imageviewer/src/widget.ts, JupyterLab's ImageViewer uses URL.createObjectURL for a specially crafted SVG image and revokes the blob URL too early, allowing the image to retain an executable same-origin context when it is opened through the image viewer and then opened in a new browser tab. The resulting cross-site scripting can be used to execute arbitrary code on the JupyterLab server. This issue is fixed in versions 4.5.10 and 4.6.2.