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 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.
CVE-2026-108752
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-108752
jupyterhub
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/jupyterhub/jupyterhub",
"vendor": "jupyterhub",
"product": "jupyterhub",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "6.0.1"
}
],
"packageURL": "pkg:pypi/jupyterhub",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-108752
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #20455 · Revision 1
- Added to Heist Feed
- Publisher date