cvedb.io
CVE-2026-40351
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-04-17T22:16:32.793 · Last modified 2026-06-17T10:45:09.980

Summary

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.

Affected products

fastgpt — fastgpt

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.