CVE-2026-34162

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

State: Published
Severity: 10.0 Critical
Published: Mar 31, 2026
Updated: Mar 31, 2026
Reserved: Mar 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	10.0 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L	GitHub_M

Weaknesses

CWE-306 Missing Authentication for Critical Function
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
FastGPTlabring	< 4.14.9.5Affected

References

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