CVE-2026-108752: fallo de gravedad baja en jupyterhub
JupyterHub through 6.0.1 OAuth Client ID Collision via Unescaped Hyphen
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
8Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 2.3epss 0.2%
JupyterHub through 6.0.1 contains an identifier collision vulnerability that allows authenticated users to overwrite another user's named-server OAuth client by registering a hyphenated username. Attackers holding a name like alice-prod can overwrite the client for alice's server prod, breaking OAuth login and revoking tokens by stopping their own server.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Productos afectados
jupyterhub · jupyterhubCVEs relacionadas — jupyterhub
En el mismo producto, de las más peligrosas a las menos.
CVE-2021-41247LOWincomplete logout in JupyterHubEPSS 0.8%CVE-2024-41942HIGHJupyterHub has a privilege escalation vulnerability with the `admin:users` scopeEPSS 0.6%CVE-2026-54338MEDIUMJupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed LoginEPSS 0.4%CVE-2024-28233HIGHXSS in JupyterHub via Self-XSS leveraged by Cookie TossingEPSS 0.3%CVE-2026-33709MEDIUMJupyterHub has an Open Redirect VulnerabilityEPSS 0.2%CVE-2026-40864MEDIUMJupyterHub: Cross-origin form POSTs bypass XSRFEPSS 0.1%
Referencias
https://github.com/jupyterhub/jupyterhubhttps://github.com/jupyterhub/jupyterhub/blob/3e516c6f382b481e815ec455befb2f14d80d337b/jupyterhub/oauth/provider.py#L719-L754https://github.com/jupyterhub/jupyterhub/blob/3e516c6f382b481e815ec455befb2f14d80d337b/jupyterhub/user.py#L1174-L1186https://github.com/jupyterhub/jupyterhub/blob/3e516c6f382b481e815ec455befb2f14d80d337b/jupyterhub/user.py#L563-L567https://hackmd.io/@haind/jupyterhub-oauth-client-id-cross-user-collisionhttps://www.vulncheck.com/advisories/jupyterhub-through-6.0.1-oauth-client-id-collision-via-unescaped-hyphen