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8.0 High

CVE-2026-14540 A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google…

Description

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 products and versions

Product Affected versions Fixed in
mcp-toolbox 0.3 0.3.0 → 1.4.0 No fix stated

References

Timeline

  1. Published
  2. Last modified

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