Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing
Impact
Affected configurations:
- Single-origin JupyterHub deployments
- JupyterHub deployments with user-controlled applications running on subdomains or peer subdomains of either the Hub or a single-user server.
By tricking a user into visiting a malicious subdomain, the attacker can achieve an XSS directly affecting the former's session. More precisely, in the context of JupyterHub, this XSS could achieve the following:
- Full access to JupyterHub API and user's single-user server, e.g.
- Create and exfiltrate an API Token
- Exfiltrate all files hosted on the user's single-user server: notebooks, images, etc.
- Install malicious extensions. They can be used as a backdoor to silently regain access to victim's session anytime.
Patches
To prevent cookie-tossing:
- Upgrade to JupyterHub 4.1 (both hub and user environment)
- enable per-user domains via
c.JupyterHub.subdomain_host = "https://mydomain.example.org" - set
c.JupyterHub.cookie_host_prefix_enabled = Trueto enable domain-locked cookies
or, if available (applies to earlier JupyterHub versions):
- deploy jupyterhub on its own domain, not shared with any other services
- enable per-user domains via
c.JupyterHub.subdomain_host = "https://mydomain.example.org"
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | jupyterhub | < 4.1.0 | 4.1.0 |
Referencias
- https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-7r3h-4ph8-w38g
- https://nvd.nist.gov/vuln/detail/CVE-2024-28233
- https://github.com/jupyterhub/jupyterhub/commit/e2798a088f5ad45340fe79cdf1386198e664f77f
- https://github.com/jupyterhub/jupyterhub
- https://pypi.org/project/jupyterhub
- https://github.com/advisories/GHSA-7r3h-4ph8-w38g
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N- Debilidad (CWE)
CWE-352, CWE-565, CWE-79- Plataforma
- Python (PyPI)
- Paquete
jupyterhub- Publicada
- 28.03.2024
- Actualizado
- 11.10.2026 15:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-1480 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-7r3h-4ph8-w38g - CC BY 4.0
Historial de vulnerabilidades: jupyterhub
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 8
- Primera → última
- 04.2019 08.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 2
- Media 6
Divulgaciones por año
- 2019: 1
- 2020: 0
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 2
- 2025: 0
- 2026: 3
-
Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.