JupyterHub is a multi-user notebook server platform that manages authentication, spawning, and access control for shared Jupyter environments in educational, research, and enterprise settings. Its observed vulnerability surface concentrates in authentication and spawner components such as FirstUseAuthenticator, KubeSpawner, and SystemdSpawner, with recurring exposure patterns centered on resource-isolation failures, access-control weaknesses, code-injection risks, and OS command-injection conditions that reflect the complexity of privilege boundaries and dynamic process spawning in a shared-tenant architecture. Current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Jupyterhub over time
Signals from CVEs in this vendor scope (4 CVEs).
4 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2021-41194CRITICAL FirstUseAuthenticator is a JupyterHub authenticator that helps new users set their password on their first login to JupyterHub. When JupyterHub is used with FirstUseAuthenticator, | Oct 28, 2021 | 9.8 | 29 | NO | NO |
CVE-2021-39160HIGH nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary c | Aug 25, 2021 | 8.8 | 27 | NO | NO |
CVE-2020-26261HIGH jupyterhub-systemdspawner enables JupyterHub to spawn single-user notebook servers using systemd. In jupyterhub-systemdspawner before version 0.15 user API tokens issued to single- | Dec 9, 2020 | 7.9 | 23 | NO | NO |
CVE-2020-15110HIGH In jupyterhub-kubespawner before 0.12, certain usernames will be able to craft particular server names which will grant them access to the default server of other users who have ma | Jul 17, 2020 | 8.1 | 20 | NO | NO |
Signals from CVEs in this vendor scope (4 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Jupyterhub.
Media articles that mention a CVE ID that affects a product developed by Jupyterhub — matched by CVE ID, not by vendor name.