DEBIAN-CVE-2026-33709
JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to version 5.4.4, an open redirect vulnerability in JupyterHub allows attackers to construct links which, when clicked, take users to the JupyterHub login page, after which they are sent to an arbitrary attacker-controlled site outside JupyterHub instead of a JupyterHub page, bypassing JupyterHub's check to prevent this. This issue has been patched in version 5.4.4.
DEBIAN-CVE-2026-33709
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-33709
jupyterhub
Source reference: /affected/0/package/name
- Affected versions
- 3.0.0+ds1-1
Source reference:
/affected/0/versions5.0.0+ds1-1Source reference:
/affected/0/versions5.0.0+ds1-2Source reference:
/affected/0/versions5.0.0+ds1-3Source reference:
/affected/0/versions5.0.0+ds1-4Source reference:
/affected/0/versions5.2.1+ds1-1Source reference:
/affected/0/versions5.2.1+ds1-2Source reference:
/affected/0/versions5.2.1+ds1-3Source reference:
/affected/0/versions5.2.1+ds1-4Source reference:
/affected/0/versions5.2.1+ds1-5Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
jupyterhub
Source reference: /affected/1/package/name
- Affected versions
- 5.2.1+ds1-4
Source reference:
/affected/1/versions5.2.1+ds1-5Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
jupyterhub
Source reference: /affected/2/package/name
- Affected versions
- 5.2.1+ds1-4
Source reference:
/affected/2/versions5.2.1+ds1-5Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/debian/jupyterhub?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.0.0+ds1-1",
"5.0.0+ds1-1",
"5.0.0+ds1-2",
"5.0.0+ds1-3",
"5.0.0+ds1-4",
"5.2.1+ds1-1",
"5.2.1+ds1-2",
"5.2.1+ds1-3",
"5.2.1+ds1-4",
"5.2.1+ds1-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33709.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/debian/jupyterhub?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.2.1+ds1-4",
"5.2.1+ds1-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33709.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jupyterhub",
"purl": "pkg:deb/debian/jupyterhub?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.2.1+ds1-4",
"5.2.1+ds1-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33709.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56792 · Revision 1
- Added to Heist Feed
- Publisher date