GHSA-33p9-3p43-82vq Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

• PyPI jupyter_core: < 5.8.1 → fixed in 5.8.1

Impact On Windows, the shared `%PROGRAMDATA%` directory is searched for configuration files (`SYSTEM_CONFIG_PATH` and `SYSTEM_JUPYTER_PATH`), which may allow users to create configuration files affecting other users. Only shared Windows systems with multiple users and unprotected `%PROGRAMDATA%` are affected. Mitigations • upgrade to `jupyter_core>=5.8.1` (5.8.0 is patched but breaks `jupyter-server`) , or • as administrator, modify the permissions on the `%PROGRAMDATA%` directory so it is not writable by unauthorized users, or • as administrator, create the `%PROGRAMDATA%\jupyter` directory with appropriately restrictive permissions, or • as user or administrator, set the `%PROGRAMDATA%` environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators _or_ the current user) Credit Reported via Trend Micro Zero Day Initiative as ZDI-CAN-25932