CVE-2026-108752 — JupyterHub through 6.0.1 OAuth Client ID Collision via Unescaped Hyphen
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 hy…
Published: 2026-10-11 · CVSS: 2.3 · CVSS 4.0
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: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7