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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jupyterlab | jupyterlab | < 4.5.10, >= 4.6.0, < 4.6.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | jupyterlab | 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4 | — |
| Debian 13 | jupyterlab | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | jupyterlab | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-jupyterlab | 4.5.10-1.1 | openSUSE-SU-2026:11634-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | jupyterlab | >= 4.6.0, < 4.6.2 | 4.6.2 | GHSA-gx64-gj6p-pc4c |
| PyPI | jupyterlab | < 4.5.10 | 4.5.10 | GHSA-gx64-gj6p-pc4c |
| PyPI | jupyterlab | < 4.5.10 · >= 4.6.0, < 4.6.2 | 4.5.10, 4.6.2 | PYSEC-2026-3671 |
Advisories 1
- openSUSE-SU-2026:11634-1 jupyter-jupyterlab-4.5.10-1.1 on GA media SUSE / openSUSE Security Updates · Aug 29, 2026
References
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-gx64-gj6p-pc4c
- https://github.com/jupyterlab/jupyterlab/pull/19184
- https://github.com/jupyterlab/jupyterlab/pull/19185
- https://github.com/jupyterlab/jupyterlab/pull/19186
- https://github.com/jupyterlab/jupyterlab/commit/9365f020baec5221deaf11535ed554c06637c999
- https://github.com/jupyterlab/jupyterlab/commit/be9303f5bcd5308eaeae953c5a3c903046682c2c
- https://github.com/jupyterlab/jupyterlab/commit/f1beab4a2027af4719d6edc07d52d6cf5a39a432
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.7.0a1