CVE Watch31 jul 2026

CVE-2026-14539

An allocation of resources without limits vulnerability in the HTTP handler component of Google mcp-toolbox versions up to and including 1.4

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 31 jul 2026 · Última mod.: 31 jul 2026 · CWE-770

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

An allocation of resources without limits vulnerability in the HTTP handler component of Google mcp-toolbox versions up to and including 1.4.0 allows an unauthenticated attacker to cause a denial of service (DoS). The /mcp endpoint handler reads incoming payloads directly into system memory using an unrestricted buffer loop (io.ReadAll) without applying defensive constraints such as http.MaxBytesReader or pre-read Content-Length enforcement. By submitting a single, massive HTTP request body, an attacker can linearly consume available host memory until the runtime process is terminated by an Out-Of-Memory (OOM) error.

Referencias oficiales

github.comhttps://github.com/googleapis/mcp-toolbox/pull/3216

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