CVE-2026-64859

CRITICAL 9.1

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

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-200
Vendor	quantumnous
Product	new-api
Published	Aug 17, 2026
Last Updated	Aug 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

QuantumNous / new-api

< 1.0.0-rc.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/QuantumNous/new-api/security/advisories/GHSA-6x2c-phff-wx57 github.com: https://github.com/QuantumNous/new-api/pull/4929 github.com: https://github.com/QuantumNous/new-api/commit/0936e2504655a5cbf7bc3c388f6d3e2bb24916d3 github.com: https://github.com/QuantumNous/new-api/releases/tag/v1.0.0-rc.7