# jupyterhub (PyPI) vulnerabilities

8 known vulnerabilities (2 high, 3 medium, 1 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Weekly downloads: 85.5K
- Dependents: 155
- Registry: https://pypi.org/project/jupyterhub/

## Advisories (8)

### [CVE-2026-54338](https://cve.now/CVE-2026-54338): JupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

- Severity: Medium 5.3
- Published: Aug 7, 2026
- Affected: fixed in 5.5.0.

### [CVE-2026-40864](https://cve.now/CVE-2026-40864): JupyterHub: Cross-origin form POSTs bypass XSRF

- Severity: Medium 5.4
- Published: May 22, 2026
- Affected: from 4.1.0, fixed in 5.4.5.

### [CVE-2026-33709](https://cve.now/CVE-2026-33709): JupyterHub has an Open Redirect Vulnerability

- Severity: Medium 5.1
- Published: Apr 3, 2026
- Affected: fixed in 5.4.4.

### [CVE-2024-41942](https://cve.now/CVE-2024-41942): JupyterHub has a privilege escalation vulnerability with the \`admin:users\` scope

- Severity: High 7.2
- Published: Aug 8, 2024
- Affected: fixed in 4.1.6; from 5.0.0, fixed in 5.1.0.

### [CVE-2024-28233](https://cve.now/CVE-2024-28233): XSS in JupyterHub via Self-XSS leveraged by Cookie Tossing

- Severity: High 8.1
- Published: Mar 27, 2024
- Affected: fixed in 4.1.0.

### [CVE-2021-41247](https://cve.now/CVE-2021-41247): incomplete logout in JupyterHub

- Severity: Low 3.5
- Published: Nov 4, 2021
- Affected: from 1.0.0, fixed in 1.5.0.

### [CVE-2020-36191](https://cve.now/CVE-2020-36191): JupyterHub 1.1.0 allows CSRF in the admin panel via a request that lacks an \_xsrf field, as demonstrated by a /hub/api/user request (to…

- Severity: Unrated
- Published: Jan 13, 2021
- Affected: fixed in 1.2.0b1; fixed in 1.2.0b1.

### [CVE-2019-10255](https://cve.now/CVE-2019-10255): An Open Redirect vulnerability for all browsers in Jupyter Notebook before 5.7.7 and some browsers (Chrome, Firefox) in JupyterHub before…

- Severity: Unrated
- Published: Mar 28, 2019
- Affected: fixed in 0.9.6.

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