CVE-2026-108752 (GCVE-0-2026-108752)

Vulnerability from cvelistv5 – Published: 2026-10-11 12:19 – Updated: 2026-10-13 17:00
VLAI
Title
JupyterHub through 6.0.1 OAuth Client ID Collision via Unescaped Hyphen
Summary
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.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 15:49 UTC
CWE
  • CWE-694 - Use of Multiple Resources with Duplicate Identifier
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6232 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
jupyterhub jupyterhub Affected: 0 , ≤ 6.0.1 (semver)
    cpe:2.3:a:jupyter:jupyterhub:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-10 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

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