Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-40351

FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass
Back to all
CVE

CVE-2026-40351

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/labring/FastGPT/releases/tag/v4.14.9.5, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40351.json, https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg, https://nvd.nist.gov/vuln/detail/CVE-2026-40351, https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00627%
EPSS Percentile
0.47478%
Introduced Version
0
Fix Available
bd966d479fbe414d02679cf79f9eaaab3d100a2d

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading