In JupyterLab before version 3.1.4, untrusted notebooks can execute code on load. In particular JupyterLab doesn't sanitize the action attribute of the HTML <form> element. Using this it is possible to trigger the form validation outside of the form itself. This is a remote code execution, but requires user action to open a notebook.
In JupyterLab before version 3.1.4, untrusted notebooks can execute code on load. In particular JupyterLab doesn't sanitize the action attribute of the HTML <form> element. Using this it is possible to trigger the form validation outside of the form itself. This is a remote code execution, but requires user action to open a notebook.
https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-4952-p58q-6crx https://github.com/jupyterlab/jupyterlab/commit/504825938c0abfa2fb8ff8d529308830a5ae42ed
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