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.
jupyter_core>=5.8.1
(5.8.0 is patched but breaks jupyter-server
) , or%PROGRAMDATA%
directory so it is not writable by unauthorized users, or%PROGRAMDATA%\jupyter
directory with appropriately restrictive permissions, or%PROGRAMDATA%
environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators or the current user)Reported via Trend Micro Zero Day Initiative as ZDI-CAN-25932
{ "nvd_published_at": "2025-06-03T17:15:21Z", "cwe_ids": [ "CWE-427" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2025-06-04T21:00:23Z" }