CVE-2025-23205

nbgrader is a system for assigning and grading notebooks. Enabling frame-ancestors: 'self' grants any JupyterHub user the ability to extract formgrader content by sending malicious links to users with access to formgrader, at least when using the default JupyterHub configuration of enablesubdomai...

GHSA-FCR8-4R9F-R66M nbgrader's `frame-ancestors: self` grants all users access to formgrader

Impact Enabling frame-ancestors: 'self' grants any JupyterHub user the ability to extract formgrader content by sending malicious links to users with access to formgrader, at least when using the default JupyterHub configuration of enablesubdomains = False. 1915 disables a protection which would...