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GHSA-gx64-gj6p-pc4c

JupyterLab: Image viewer allows XSS when opening malicious image in new browser tab

Source: GitHub Advisory Database (reviewed) High CVE-2026-73415

Packages

EcosystemPackageAffectedFixed in
PyPI jupyterlab >= 4.6.0, < 4.6.2 4.6.2
PyPI jupyterlab < 4.5.10 4.5.10

Details

As written in the advisory (Markdown source, shown as plain text).

JupyterLab's image viewer allows for cross-site scripting (XSS) when a specially-crafted image file is opened through the image viewer and then opened in a new tab. This XSS issue can be used to cause remote code execution (RCE) on the JupyterLab server. ### Impact This vulnerability allows for arbitrary code execution. ### Patches JupyterLab [`v4.6.2`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2) and [`v4.5.10`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10) contain the patch. ### Workarounds Disable the image viewer plugin: ``` jupyter labextension disable @jupyterlab/imageviewer-extension:plugin ``` Confirm with: ``` jupyter labextension list ```

References

External links from the advisory. They lead to third-party sites.