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.
Affected products
fastgpt: fastgpt
References5
- github.com/labring/FastGPT/security/advisories/GHSA-w36r-f268-p… ExploitMitigationVendor Advisory
- github.com/labring/FastGPT/security/advisories/GHSA-w36r-f268-p… ExploitMitigationVendor Advisory
- github.com/labring/FastGPT/commit/bc7eae2ed61481a5e322208829be2… Patch
- github.com/labring/FastGPT/pull/6640 Issue TrackingPatch
- github.com/labring/FastGPT/releases/tag/v4.14.9.5 ProductRelease Notes
Metrics
- CVSS 3.1
-
10.0
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - EPSS — exploit probability
- 0% percentile: 37 · as of 12 November 2026
- CWE
- CWE-306CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.