Detections
Analytics
CVE-2026-40351
critical
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.
References
https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg
https://github.com/labring/FastGPT/releases/tag/v4.14.9.5
https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d