恶意用户可以利用不安全表达式中包含的方法或函数，来访问他们无权访问的驱动器、文件或其他资源。

Unsafe expressions contain methods or functions that could be exploited by malicious users to access drives, files, or other resources for which they do not have authorization.

youdao

注意：这个正则表达式不应该使用在生产环境中，因为它对于XSS攻击不安全。

Note: This regular expression should not be used in production environments as it is not secure against XSS attacks.

youdao

感谢那样做，表达式计算更快了，并且总是安全的，因为它运行于它自己的应用域。

Thanks to that, expressions evaluation is much more fast and always safe because it runs in its own ApplicationDomain.

youdao