CVE-2026-64859: Quantumnous New-API

Critical severity, CVSS 9.1. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Quantumnous New-API: before 1.0.0-rc.7 (fixed in 1.0.0-rc.7)

Published 2026-08-17. Last modified 2026-09-18.