# CVE-2026-73415: jupyterlab: jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Arc...

CVE-2026-73415 is fixed in jupyterlab on 1 platform by DEBIAN-CVE-2026-73415 (version 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4), released August 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-73415
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0074
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 12, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jupyterlab Debian 14 | 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4 | [DEBIAN-CVE-2026-73415](https://patchblox.com/security/data/fix/linux/debian-cve-2026-73415.md) | Aug 25, 2026 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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