漏洞信息
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Vulnerability Title
GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion
Vulnerability Description
GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL queries are executed using the first user's credentials. The singleton is never updated to reflect later users' tokens. This vulnerability is fixed in 1.1.2.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Vulnerability Type
访问控制不恰当
Vulnerability Title
GitHub MCP Server 权限许可和访问控制问题漏洞
Vulnerability Description
GitHub GitHub MCP Server是美国GitHub公司开源的一个Model Context Protocol(模型上下文协议)服务器实现。 GitHub MCP Server 0.22.0版本至1.1.2之前版本存在权限许可和访问控制问题漏洞,该漏洞源于RepoAccessCache实现为进程全局单例,使用第一个通过身份验证用户的GraphQL客户端初始化,后续所有请求均使用该用户的凭据,可能导致权限许可和访问控制问题。
CVSS Information
N/A
Vulnerability Type
N/A