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Obot MCP 网关路由前缀绕过授权漏洞

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AI overview

Obot 的 UI-fallback 拒绝列表只覆盖 /mcp-connect/ 前缀,未覆盖同源的 /mcp-connect-composite/{mcp_id} 路由,导致 checkUI 落到默认返回 true,Authorize 在 UI 分支短路放行。两条路由都指向同一个 mcpGateway.Proxy 处理器,因此任何已认证用户(含 Basic 角色)只要拿到 composite MCP ID,就能绕过管理员设定的访问控制。Obot 已修复该遗漏路由。

Generated by AI from reports · Updated 9 days ago

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    obot-platform/obot GHSA-6fwv-3h4c-37j9;VulnCheck CNA;ThreatFrontier 复述
    Obot 修复遗漏 /mcp-connect-composite/ 路由,任意认证用户可绕过 MCP 访问控制

    Obot 的 UI-fallback 拒绝列表只覆盖 /mcp-connect/ 前缀,未覆盖同源的 /mcp-connect-composite/{mcp_id} 路由,导致 checkUI 落到默认返回 true,Authorize 在 UI 分支短路放行。两条路由都指向同一个 mcpGateway.Proxy 处理器,因此任何已认证用户(含 Basic 角色)只要拿到 composite MCP ID,就能绕过管理员设定的 Access Control Rules 连接并使用 MCP 服务器,包括发起工具调用,影响与 GHSA-vw82-7fv8-r6gp 相同。该问题在 main 分支 HEAD e6e6002 上经代码追踪确认,CVSS 3.1 评分约 8.1,对应 CWE-863 与 CWE-1289。

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