Security Advisory

CVE-2026-40351

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-04-17 21:05:05

Last updated 2026-04-20 14:57:15

Assigner GitHub_M

CVSS score 9.8

State PUBLISHED

Description

FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password-based login endpoint uses TypeScript type assertion without runtime validation, allowing an unauthenticated attacker to pass a MongoDB query operator object (e.g., {"$ne": ""}) as the password field. This NoSQL injection bypasses the password check, enabling login as any user including the root administrator. This issue has been fixed in version 4.14.9.5.

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