9.8

CVE-2026-40351

Exploit

FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Fastgpt ≫ Fastgpt Version < 4.14.9.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.63% 0.453
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-943 Improper Neutralization of Special Elements in Data Query Logic

The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.

https://github.com/labring/FastGPT/releases/tag/v4.14.9.5
Product
Release Notes
https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg
Vendor Advisory
Exploit
Mitigation
https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d
Patch