{"id":"CVE-2025-30167","aliases":["GHSA-33p9-3p43-82vq","PYSEC-2026-1477"],"url":"https://o3.security/vulnerability/CVE-2025-30167","summary":"Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability","details":"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).","published":"2025-06-03T16:42:16.357Z","modified":"2026-08-12T03:51:45.116863698Z","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"jupyter-core","fixedVersion":"5.8.1"}],"fix":{"url":"https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52","label":"jupyter/jupyter_core@5e89656"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30167.json"},{"type":"ADVISORY","url":"https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30167"},{"type":"FIX","url":"https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52"},{"type":"PACKAGE","url":"https://github.com/jupyter/jupyter_core"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:45.116863698Z"}}