---
id: CVE-2026-14540
title: >-
  A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP
  source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0
summary: >-
  A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP
  source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0.
  While the toolbox implements baseline input sanitization for user-controlled
  par…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-918
vendor: google
product: mcp_toolbox_for_databases
affected:
  - 'mcp_toolbox_for_databases >= 0.3.0, < 1.5.0'
patched:
  - mcp_toolbox_for_databases 1.5.0
published: '2026-07-31'
updated: '2026-08-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14540'
references:
  - url: 'https://github.com/googleapis/mcp-toolbox/pull/3448'
    label: cve-coordination@google.com
tags:
  - nvd
epss: 0.00121
epssPercentile: 0.02193
ingestedAt: '2026-08-08T14:22:57.207Z'
---

## Overview

A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parameters, the underlying HTTP client (internal/sources/http/http.go) fails to safely regulate request redirection boundaries. Specifically, the client is initialized without a restrictive CheckRedirect policy hook and lacks target IP validation. An attacker or a malicious data-driven prompt can supply a crafted path parameter that triggers an open redirect or a direct destination swap on the target backend, coercing the mcp-toolbox into blindly following the redirection and making unauthorized requests to internal or arbitrary external endpoints.

## Affected

- `mcp_toolbox_for_databases >= 0.3.0, < 1.5.0`

## Remediation

Upgrade past the affected range:

- `mcp_toolbox_for_databases 1.5.0`