CVE-2026-108752

MediumCVSS 4.2/10Last modified Oct 16, 2026

Description

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.

Metrics

CVSS 3.1 4.2/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-694

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Oct 11, 2026
Last modified: Oct 16, 2026
NVD status: Awaiting Analysis

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