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    CVE-2026-40351

    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.

    Published:Apr 17, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.00061
    CVSS Score:9.8

    Affected Products

    Vendor
    Fastgpt
    Product
    Fastgpt
    Vendor
    Labring
    Product
    Fastgpt

    Exploits

    https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-676 NoSQL Injection

    Related CVEs

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High