CVE-2025-30167
Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
Impact
## 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
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | jupyter_core | < 5.8.0 | 5.8.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jupyter | Jupyter Core | before 5.8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52
- https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq
- https://github.com/advisories/GHSA-33p9-3p43-82vq
- https://nvd.nist.gov/vuln/detail/CVE-2025-30167