jupyterhub — security advisory
JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to versions 4.1.6 and 5.1.0, if a user is granted the `admin:users` scope, they may escalate their own privileges by making themselves a full admin user. The impact is relatively small in that `admin:users` is already an extremely privileged scope only granted to trusted users. In effect, `admin:users` is equivalent to `admin=True`, which is not intended. Note that the change here only prevents escalation to the built-in JupyterHub admin role that has unrestricted permissions. It does not prevent users with e.g. `groups` permissions from granting themselves or other users permissions via group membership, which is intentional. Versions 4.1.6 and 5.1.0 fix this issue.
- Products
- jupyterhub
- Affected versions
- 2.0.0+ds1-1, 2.0.0+ds1-2, 3.0.0+ds1-1, 5.2.1+ds1-2, 5.2.1+ds1-3, 5.2.1+ds1-4, 5.2.1+ds1-5
- Fixed versions
- Not specified
- CVEs
- CVE-2024-41942
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:09 UTC · Revision 1
Source evidence
JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to versions 4.1.6 and 5.1.0, if a user is granted the `admin:users` scope, they may escalate their own privileges by making themselves a full admin user. The impact is relatively small in that `admin:users` is already an extremely privileged scope only granted to trusted users. In effect, `admin:users` is equivalent to `admin=True`, which is not intended. Note that the change here only prevents escalation to the built-in JupyterHub admin role that has unrestricted permissions. It does not prevent users with e.g. `groups` permissions from granting themselves or other users permissions via group membership, which is intentional. Versions 4.1.6 and 5.1.0 fix this issue.
osv:UBUNTU-CVE-2024-41942
jupyterhub
Fixed versions: Not specified
jupyterhub
Fixed versions: Not specified
jupyterhub
Fixed versions: Not specified
jupyterhub
Fixed versions: Not specified
jupyterhub
Fixed versions: Not specified
Complete source record
{
"id": "5223abab52c05afc369e01274ce1977d1ef06546e5b1ba300a341c8acbee5a89",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2024-41942",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2024-41942",
"summary": "JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to versions 4.1.6 and 5.1.0, if a user is granted the `admin:users` scope, they may escalate their own privileges by making themselves a full admin user. The impact is relatively small in that `admin:users` is already an extremely privileged scope only granted to trusted users. In effect, `admin:users` is equivalent to `admin=True`, which is not intended. Note that the change here only prevents escalation to the built-in JupyterHub admin role that has unrestricted permissions. It does not prevent users with e.g. `groups` permissions from granting themselves or other users permissions via group membership, which is intentional. Versions 4.1.6 and 5.1.0 fix this issue.",
"evidence": "osv:UBUNTU-CVE-2024-41942",
"products": [
{
"name": {
"value": "jupyterhub",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0+ds1-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "jupyterhub",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0.0+ds1-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "jupyterhub",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2.1+ds1-2",
"evidence": "/affected/2/versions"
},
{
"value": "5.2.1+ds1-3",
"evidence": "/affected/2/versions"
},
{
"value": "5.2.1+ds1-4",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "jupyterhub",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2.1+ds1-4",
"evidence": "/affected/3/versions"
},
{
"value": "5.2.1+ds1-5",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "jupyterhub",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2.1+ds1-4",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2024-41942",
"aliases": [
"UBUNTU-CVE-2024-41942"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/ubuntu/jupyterhub?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2.0.0+ds1-1",
"2.0.0+ds1-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-41942.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jupyterhub",
"binary_version": "2.0.0+ds1-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/ubuntu/jupyterhub?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3.0.0+ds1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-41942.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jupyterhub",
"binary_version": "3.0.0+ds1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/ubuntu/jupyterhub?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"5.2.1+ds1-2",
"5.2.1+ds1-3",
"5.2.1+ds1-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-41942.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jupyterhub",
"binary_version": "5.2.1+ds1-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/ubuntu/jupyterhub?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"5.2.1+ds1-4",
"5.2.1+ds1-5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-41942.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jupyterhub",
"binary_version": "5.2.1+ds1-5"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/ubuntu/jupyterhub?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"5.2.1+ds1-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-41942.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jupyterhub",
"binary_version": "5.2.1+ds1-4"
}
]
}
}
],
"modified": "2026-10-17T12:56:38.720593605Z",
"provider": "osv",
"upstream": [
"CVE-2024-41942"
],
"references": [
"https://ubuntu.com/security/CVE-2024-41942",
"https://www.cve.org/CVERecord?id=CVE-2024-41942",
"https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-9x4q-3gxw-849f",
"https://github.com/jupyterhub/jupyterhub/commit/99e2720b0fc626cbeeca3c6337f917fdacfaa428",
"https://github.com/jupyterhub/jupyterhub/commit/ff2db557a85b6980f90c3158634bf924063ab8ba"
]
},
"related_cves": [
{
"value": "CVE-2024-41942",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355896,
"published_at": "2024-08-08T15:15:00+00:00"
}