我们有这个纯阿拉伯语的asp.net应用程序。此应用程序中的大多数字段只接受阿拉伯字符，不应该只有一个英文字母。所以我想如果我通过将所有阿拉伯字符和任何标点符号列入白名单来删除所有英文字符，我希望XSS无法进入这些字段。这基本上是具有非拉丁字符输入的优点。
右？为什么呢？
答案 0 :(得分：4)
XSS的机会很少，但您可能仍需要替换特殊字符（一些标点符号，如"，'，<，>等）有两个原因。
恶意javascript代码可以写成没有英文字符。例如，以下javascript代码等于alert(document.cookie)，您可以在浏览器控制台中尝试：
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虽然我不认为可以让浏览器将该代码作为javascript执行而没有任何英文字符，但这实际上取决于您将如何显示用户输入的数据。如果他们设法执行这样的代码，他们就可以窃取用户的cookie。但如果用[之类的东西代替这些字符，他们就不能这样做。保持更安全并消除可能性是很好的。
如果您不替换特殊字符（某些标点符号），您的HTML可能会被破坏并且布局可能会混乱。例如，"应替换为"，以便您的网页可以正常显示（您可能需要替换的其他字符包括<(<)，>(>)等），否则你的HTML可能搞砸了（例如<input type="text" name="test" value="He recited that, "Shall I compare thee to a summer's day", and continued..."><br>英语作为例子，但它与其他语言基本相同，只有"He recited that, "将被视为值，页面将被搞砸。）这可能会导致错误的显示，布局和内容。
希望这能解决您的疑虑^ _ ^