jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-73415)

Affected packages:

• jupyterlab >= 4.6.0, < 4.6.2
• jupyterlab < 4.5.10

Patched in:

• jupyterlab 4.6.2
• jupyterlab 4.5.10

Source: https://osv.dev/vulnerability/GHSA-gx64-gj6p-pc4c

Vendor advisories

• RHSA-2026:65126 · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-09-08 · advisory
• Red Hat VEX · Important · affected: Migration Toolkit for Applications 8, Red Hat OpenShift AI (RHOAI) · no fix planned: Migration Toolkit for Applications 8, Red Hat OpenShift AI (RHOAI) · updated 2026-09-08 · vex