2008年8月24日 · Regular expressions are quite easy to trick specially when dealing with broken HTML. For example, the regular expression listed in the Sanitize HTML link will fail to remove all 'a' elements that have an attribute between the element name and the attribute 'href': < a alt="xss injection" href="http://www.malicous.com/bad.php" >

This cheat sheet demonstrates that input filtering is an incomplete defense for XSS by supplying testers with a series of XSS attacks that can bypass certain XSS defensive filters. Basic XSS Test Without Filter Evasion ¶

Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data. Regular expression tester with syntax …

2019年8月9日 · XSS. To give an example of where your current regex will fail, it will fail if user input is injected into javascript that's not enclosed in quotes. Imagine a URL like this: https://example.org/page?id=5 The id parameter gets injected into some javascript on the page like this: var resourceId = [ID_FROM_URL];

The easiest and probably most secure way I can think of (doing this with regex) is to first replace all < and > with &lt; and &gt; respectively, and then explicitly "un-replace" the b and i tags. To replace < and > you just need text substitution, no regex.

2015年5月7日 · I am trying to protect my website from Cross-Site Scripting (XSS) and I'm thinking of using regular expressions to validate user inputs. Here is my question: I have a list of dangerous HTML tags....

2014年10月20日 · How could this anti-xss regexp be bypassed: /<(?:\w+)\W+?[\w]/ I am working on it but I can't find a way. Just to be sure that I have understood it correctly, this regexp search for a pattern with a '<', then one or more characters, then one or …

2024年12月29日 · 在JavaScript中，我们可以使用正则表达式来检测和过滤掉可能引起XSS攻击的字符。 以下是一些常见的XSS攻击方式和相应的正则表达式过滤方法： 1. 过滤HTML标签. 攻击者可以通过HTML标签注入恶意脚本。 以下是一个示例： <script>alert ('XSS攻击！ ');</script> 为了过滤掉这种攻击，我们可以使用以下正则表达式： const regex = /<script.*?>.*?<\/script>/gi; const input = "这是一个包含<script>alert ('XSS攻击！

2020年8月27日 · * xss替换函数. * @param value 需要替换的字符. * @return 替换后的字符. */ public static String stripXSS(String value) { if (value != null) {

XSS（Cross-Site Scripting，跨站脚本攻击）是一种注入攻击，攻击者通过在受信任的网站上注入恶意脚本，使得用户的浏览器在访问该网站时执行这些恶意脚本，从而导致信息泄露等安全问题。