This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-108752 →

DEBIAN-CVE-2026-108752

JupyterHub through 6.0.1 contains an identifier collision vulnerability that allows authenticated users to overwrite another user's named-server OAuth...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 jupyterhub

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 jupyterhub

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 jupyterhub

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org