CVE-2025-30167CWE-427

Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

High · published June 3, 2025

CVSS v3.1
7.3
EPSS
0%
Percentile
8.2
In the wild
Unconfirmed
What it is

Jupyter Core is a package for the core common functionality of Jupyter projects. When using Jupyter Core prior to version 5.8.0 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. Users should upgrade to Jupyter Core version 5.8.0 or later to receive a patch. Some other mitigations are available. 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).

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00190 · 8.2th percentile
Weakness
CWE-427 · Uncontrolled Search Path Element
Published
2025-06-03T16:42Z
EPSS history
Timeline
  • 03 JUN 16:42Z
    Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
    cvelistv5