CVE-2025-30167High· 7.3▾ TwilightJupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.2%
0.2% → 0.2%
Last analysed / modified upstream
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
jupyter-core < 5.8.1Upgrade to a patched release:
jupyter-core 5.8.1