CVE-2026-64859

New API: User List API Leaks Root User Access Token Leading to Privilege Escalation

Published Aug 17, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Description
New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to 1.0.0-rc.7, the admin user list and user lookup APIs, including GET /api/user/, return User.AccessToken as access_token because User model objects are serialized after queries use Omit("password"), allowing an authenticated administrator to obtain the root user's bearer token and access root-only system configuration APIs. This issue is fixed in version 1.0.0-rc.7.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-6x2c-phff-wx57 New API: User List API Leaks Root User Access Token Leading to Privilege Escalation
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Quantumnous
Quantumnous new-api
Vendors & Products Quantumnous
Quantumnous new-api
Type Values Removed Values Added
Description New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to 1.0.0-rc.7, the admin user list and user lookup APIs, including GET /api/user/, return User.AccessToken as access_token because User model objects are serialized after queries use Omit("password"), allowing an authenticated administrator to obtain the root user's bearer token and access root-only system configuration APIs. This issue is fixed in version 1.0.0-rc.7.
Title New API: User List API Leaks Root User Access Token Leading to Privilege Escalation
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 17, 2026, 6:56 PM
Reserved
Jul 20, 2026, 6:31 PM
Status
Deferred
Published
Aug 17, 2026, 4:17 PM
Modified
Sep 18, 2026, 8:09 PM