CVE-2026-33709

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Source
https://cve.org/CVERecord?id=CVE-2026-33709
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33709.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33709
Aliases
Downstream
Published
2026-04-03T22:00:46.703Z
Modified
2026-07-08T08:12:49.172692013Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
JupyterHub has an Open Redirect Vulnerability
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33709.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-601"
    ]
}
References

Affected packages

Git / github.com/jupyterhub/jupyterhub

Affected ranges

Type
GIT
Repo
https://github.com/jupyterhub/jupyterhub
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a1ebcba4755c81b95386f1c130db4a04a569a57d
Database specific 
{
    "cpe": "cpe:2.3:a:jupyter:jupyterhub:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.4.4"
        }
    ]
}

Affected versions

0.*
0.1.0
0.2.0
0.3.0
0.4.0
0.4.1
0.5.0
0.6.0
0.6.1
0.7.0
0.7.1
0.7.2
0.8.0
0.8.0b1
0.8.0b2
0.8.0b3
0.8.0b4
0.8.0b5
0.8.0rc1
0.8.0rc2
0.8.1
0.9.0
0.9.0b1
0.9.0b2
0.9.0b3
0.9.0rc1
0.9.1
0.9.2
1.*
1.0.0
1.0.0b1
1.0.0b2
1.1.0
1.1.0b1
1.2.0
1.2.0b1
1.2.1
1.3.0
1.4.0
2.*
2.0.0
2.0.0b1
2.0.0b2
2.0.0b3
2.0.0rc1
2.0.0rc2
2.0.0rc3
2.0.0rc4
2.0.0rc5
2.0.1
2.0.2
2.1.0
2.1.1
2.2.0
2.2.1
2.2.2
3.*
3.0.0
3.0.0b1
3.1.0
4.*
4.0.0
4.0.0b1
4.0.0b2
4.0.1
5.*
5.0.0
5.0.0b1
5.0.0b2
5.1.0
5.2.0
5.2.1
5.3.0
5.3.0rc0
5.4.0
5.4.1
5.4.2
5.4.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33709.json"