English(EN) The first of its kind: how one unbounded request body became a denial-of-service class across every major MCP SDK

在模型上下文协议SDK中发现广泛的拒绝服务漏洞

作者 PulseAugur 编辑部 · [1 个来源] · 2026-11-03 12:16

一个广泛的拒绝服务漏洞（标识为CVE-2026-39313）已在多个模型上下文协议（MCP）SDK中被发现。该缺陷源于一个无界的HTTP请求体，允许未经身份验证的攻击者通过单个请求耗尽服务器内存，从而导致拒绝服务。该漏洞于2026年4月首次在mcp-framework中报告，随后在至少九个其他MCP项目中被发现并修补，包括Python、Java、Go、Ruby、PHP和TypeScript的官方SDK，修复通常涉及将默认请求体大小限制为4 MiB。 AI

影响此漏洞突显了AI模型上下文协议处理请求时存在的关键安全缺陷，可能影响AI服务的稳定性和可用性。

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Signal score: 23 / 100; Composite score across the factors below. Higher = stronger signal that this story matters right now.
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dev.to — MCP tag TIER_1 English(EN) · razashariff · 2026-11-03 12:16

The first of its kind: how one unbounded request body became a denial-of-service class across every major MCP SDK

<h2> The one-line version </h2> <p>In April 2026 I reported <strong>CVE-2026-39313</strong>, a denial-of-service flaw in an MCP server framework. It was the first CVE of its kind: an unbounded HTTP request body, CWE-770, that lets a single unauthenticated request exhaust a Model …

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The first of its kind: how one unbounded request body became a denial-of-service class across every major MCP SDK

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