---
id: CVE-2026-34163
title: FastGPT is an AI Agent building platform
summary: >-
  FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's
  MCP (Model Context Protocol) tools endpoints (/api/core/app/mcpTools/getTools
  and /api/core/app/mcpTools/runTool) accept a user-supplied URL parameter and
  mak…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: fastgpt
product: fastgpt
affected:
  - fastgpt < 4.14.9.5
patched:
  - fastgpt 4.14.9.5
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-34163'
references:
  - url: >-
      https://github.com/labring/FastGPT/commit/bc7eae2ed61481a5e322208829be291faec58c00
    label: security-advisories@github.com
  - url: 'https://github.com/labring/FastGPT/pull/6640'
    label: security-advisories@github.com
  - url: 'https://github.com/labring/FastGPT/releases/tag/v4.14.9.5'
    label: security-advisories@github.com
  - url: 'https://github.com/labring/FastGPT/security/advisories/GHSA-x9vj-5m4j-9mfv'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00422
epssPercentile: 0.33894
ingestedAt: '2026-07-24T21:39:13.301Z'
---

## Overview

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP (Model Context Protocol) tools endpoints (/api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool) accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the URL points to an internal/private network address. Although the application has a dedicated isInternalAddress() function for SSRF protection (used in other endpoints like the HTTP workflow node), the MCP tools endpoints do not call this function. An authenticated attacker can use these endpoints to scan internal networks, access cloud metadata services, and interact with internal services such as MongoDB and Redis. This issue has been patched in version 4.14.9.5.

## Affected

- `fastgpt < 4.14.9.5`

## Remediation

Upgrade past the affected range:

- `fastgpt 4.14.9.5`