转载：https://www.cnblogs.com/wxxweb/p/3738696.html
在CefBrowserSettings也就是_cef_browser_settings_t结构体中，有个成员变量web_security，来看下它的注释
/// // Controls whether web security restrictions (same-origin policy) will be // enforced. Disabling this setting is not recommend as it will allow risky // security behavior such as cross-site scripting (XSS). Also configurable // using the "disable-web-security" command-line switch. /// cef_state_t web_security;
1.将其赋值为true，即可运行跨域访问
2.命令行设置
command_line->AppendSwitch("--disable-web-security");//关闭同源策略
原文：https://www.cnblogs.com/chechen/p/10289000.html