High
jupyter-core — security advisory
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).
- Products
- jupyter-core
- Affected versions
- 4.3.0-1, 4.4.0-1, 4.4.0-2, 4.4.0-2ubuntu0.1~esm1, 4.5.0-2, 4.6.0-1, 4.6.1-1, 4.6.2-1ubuntu1, 4.6.3-3, 4.6.3-3ubuntu0.1~esm1, 4.7.1-1, 4.9.1-1, 4.9.1-1ubuntu0.1~esm1, 5.3.1-1, 5.3.2-1, 5.3.2-1ubuntu1, 5.7.2-5, 5.9.1-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-30167
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:26 UTC · Revision 1
Source evidence
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).
osv:UBUNTU-CVE-2025-30167
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
jupyter-core
Fixed versions: Not specified
Complete source record
{
"id": "753a97ff32c902ef91ca9d8012c5079abe60b2d13e1788e7b5eac6da5ab26859",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-30167",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-30167",
"summary": "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).",
"evidence": "osv:UBUNTU-CVE-2025-30167",
"products": [
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"evidence": "/affected/0/package/name"
},
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
},
{
"value": "4.4.0-2ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
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"evidence": "/affected/1/package/name"
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"affected_versions": [
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{
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{
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{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
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{
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},
{
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"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
}
]
},
{
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{
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"evidence": "/affected/3/versions"
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{
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{
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"evidence": "/affected/5/package/name"
},
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"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/5/versions"
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]
},
{
"name": {
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"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/6/versions"
},
{
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"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2025-30167",
"aliases": [
"UBUNTU-CVE-2025-30167"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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"events": [
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"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"4.3.0-1",
"4.4.0-1",
"4.4.0-2",
"4.4.0-2ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30167.json"
},
"ecosystem_specific": {
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{
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{
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"binary_version": "4.4.0-2ubuntu0.1~esm1"
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{
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"package": {
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"purl": "pkg:deb/ubuntu/jupyter-core?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
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"4.6.0-1",
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"4.6.2-1ubuntu1",
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],
"modified": "2026-10-17T12:56:49.995185802Z",
"provider": "osv",
"upstream": [
"CVE-2025-30167"
],
"references": [
"https://ubuntu.com/security/CVE-2025-30167",
"https://www.cve.org/CVERecord?id=CVE-2025-30167",
"https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq"
]
},
"related_cves": [
{
"value": "CVE-2025-30167",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356420,
"published_at": "2025-06-03T17:15:00+00:00"
}