CVE-2026-42271— LiteLLM: Authenticated command execution via MCP stdio test endpoints

LiteLLM: Authenticated command execution via MCP stdio test endpoints

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.74.2 to before version 1.83.7, two endpoints used to preview an MCP server before saving it — POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list — accepted a full server configuration in the request body, including the command, args, and env fields used by the stdio transport. When called with a stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a valid proxy API key, with no role check. Any authenticated user — including holders of low-privilege internal-user keys — could therefore run arbitrary commands on the host. This issue has been patched in version 1.83.7.

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在命令中使用的特殊元素转义处理不恰当(命令注入)

LiteLLM 命令注入漏洞

LiteLLM是Berri AI开源的一个应用程序。可以使用 OpenAI 格式调用所有 LLM API。 LiteLLM 1.74.2版本至1.83.7之前版本存在命令注入漏洞，该漏洞源于两个用于预览MCP服务器的端点接受请求体中的完整服务器配置，包括stdio传输使用的命令、参数和环境字段，当使用stdio配置调用时端点尝试连接并生成子进程，端点仅由有效代理API密钥保护而无角色检查，任何认证用户均可运行任意命令。

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