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CVE-2026-40351

FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
labring / FastGPTaffected < 4.14.9.5

CWE

CWE-943

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.