BIT-jupyterhub-2026-54338

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Import Source

https://github.com/bitnami/vulndb/tree/main/data/jupyterhub/BIT-jupyterhub-2026-54338.json

JSON Data

https://api.test.osv.dev/v1/vulns/BIT-jupyterhub-2026-54338

Aliases

Published

2026-09-29T08:44:40Z

Modified

2026-09-29T10:10:59Z

Summary

JupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

Details

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and storage resources. This issue is fixed in version 5.5.0.

Database specific

{
    "cpes": [
        "cpe:2.3:a:jupyter:jupyterhub:*:*:*:*:*:python:*:*"
    ],
    "severity": "Medium"
}

References

Affected packages

Bitnami / jupyterhub

Package

Name: jupyterhub
Purl: pkg:bitnami/jupyterhub

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.5.0

Database specific

source

"https://github.com/bitnami/vulndb/tree/main/data/jupyterhub/BIT-jupyterhub-2026-54338.json"