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CVE-2026-108395— Model Context Protocol Java SDK HTTP server transports allow memory exhaustion through unbounded request bodies

一分钟漏洞结论

影响对象
modelcontextprotocol io.modelcontextprotocol.sdk:mcp
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

The Model Context Protocol Java SDK is the official Java SDK for Model Context Protocol servers and clients. From version 0.8.0 through 0.12.0 in the io.modelcontextprotocol.sdk:mcp artifact, from 0.13.0 through 0.18.3 and 1.0.0 through 1.1.3 in io.modelcontex

CVSS 7.5 · High

影响版本矩阵 4

厂商产品 版本范围状态
modelcontextprotocol io.modelcontextprotocol.sdk:mcp >= 0.8.0, < 0.13.0 affected
modelcontextprotocol io.modelcontextprotocol.sdk:mcp-core >= 0.13.0, < 0.18.4 affected
>= 1.0.0, < 1.1.4 affected
>= 2.0.0-M1, < 2.0.1 affected
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一、 漏洞 CVE-2026-108395 基础信息

漏洞信息

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Vulnerability Title
Model Context Protocol Java SDK HTTP server transports allow memory exhaustion through unbounded request bodies
来源: CVE Program / CVE List V5
Vulnerability Description
The Model Context Protocol Java SDK is the official Java SDK for Model Context Protocol servers and clients. From version 0.8.0 through 0.12.0 in the io.modelcontextprotocol.sdk:mcp artifact, from 0.13.0 through 0.18.3 and 1.0.0 through 1.1.3 in io.modelcontextprotocol.sdk:mcp-core, and from mcp-core 2.0.0-M1 through 2.0.0, the Servlet-based SSE, Streamable HTTP, and Stateless server transports read an HTTP request body into memory without enforcing a maximum size. An unauthenticated remote client able to reach an affected transport can stream an arbitrarily large POST body, including with chunked transfer encoding, until the Java process exhausts its heap and becomes unavailable. Authentication, Origin or Host validation, or an upstream request-size limit can reject the request before the vulnerable read. The maintained mcp-core lines are fixed in versions 0.18.4, 1.1.4, and 2.0.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
modelcontextprotocol io.modelcontextprotocol.sdk:mcp >= 0.8.0, < 0.13.0 -
modelcontextprotocol io.modelcontextprotocol.sdk:mcp-core >= 0.13.0, < 0.18.4 -

二、漏洞 CVE-2026-108395 的公开POC

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三、漏洞 CVE-2026-108395 的情报信息

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CVE-2026-108395 其他参考 (4)

同批安全公告 · modelcontextprotocol · 2026-10-14 · 共 3 条

CVE-2026-109527 7.5 HIGH Model Context Protocol Python SDK HTTP and OAuth endpoints allow memory exhaustion through
CVE-2026-59951 6.9 MEDIUM MCP Python SDK: Unbounded Session Accumulation in StreamableHTTP Transport Enables Resourc

IV. Related Vulnerabilities

Same vendor: modelcontextprotocol
Same weakness: CWE-770

V. Comments for CVE-2026-108395

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