PT-2026-33519 · Labring · Fastgpt

Published 2026-04-17 · Updated 2026-04-17 · CVE-2026-40351

NVD

CVSS v3.1

9.8

Critical

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Weakness Enumeration

CWE-943

Related Identifiers

CVE-2026-40351

Affected Products

Fastgpt

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40351 · Security Note
• https://github.com/labring/FastGPT/releases/tag/v4.14.9.5 · Note
• https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d · Note
• https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg · Note