CVE-2024-41942: high-severity vulnerability in jupyterhub
JupyterHub has a privilege escalation vulnerability with the `admin:users` scope
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.6%
JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to versions 4.1.6 and 5.1.0, if a user is granted the `admin:users` scope, they may escalate their own privileges by making themselves a full admin user. The impact is relatively small in that `admin:users` is already an extremely privileged scope only granted to trusted users.
In effect, `admin:users` is equivalent to `admin=True`, which is not intended. Note that the change here only prevents escalation to the built-in JupyterHub admin role that has unrestricted permissions. It does not prevent users with e.g. `groups` permissions from granting themselves or other users permissions via group membership, which is intentional. Versions 4.1.6 and 5.1.0 fix this issue.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected products
jupyterhub · jupyterhubRelated CVEs — jupyterhub
In the same product, most dangerous first.
CVE-2021-41247LOWincomplete logout in JupyterHubEPSS 0.8%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-2026-108752LOWJupyterHub through 6.0.1 OAuth Client ID Collision via Unescaped HyphenEPSS 0.2%CVE-2026-33709MEDIUMJupyterHub has an Open Redirect VulnerabilityEPSS 0.2%CVE-2026-40864MEDIUMJupyterHub: Cross-origin form POSTs bypass XSRFEPSS 0.1%