CVE-2026-34162CWE-306CWE-918

FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft

Critical · published March 31, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
49.0
In the wild
Unconfirmed
What it is

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, the FastGPT HTTP tools testing endpoint (/api/core/app/httpTools/runTool) is exposed without any authentication. This endpoint acts as a full HTTP proxy — it accepts a user-supplied baseUrl, toolPath, HTTP method, custom headers, and body, then makes a server-side HTTP request and returns the complete response to the caller. This issue has been patched in version 4.14.9.5.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00620 · 49.0th percentile
Weaknesses
CWE-306 · Missing Authentication for Critical Function; CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-03-31T13:43Z
EPSS history
Timeline
  • 31 MAR 13:43Z
    FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft
    cvelistv5