> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/zh/web/xss/xss-in-template-literal-with-escaped-unicode.md).
# 带转义 Unicode 字符的字面模板中的 XSS
带转义 Unicode 字符的字面模板中的 XSS 笔记，适用于 PortSwigger Web Security Academy 实验室，包括利用流程、载荷测试、Burp Suite 验证和修复 cont
### 反射型 XSS 注入模板字面量中，尖括号、单引号、双引号、反斜杠和反引号均进行了 Unicode 转义
XSS 反射在字面量模板（反引号）中，其中 `<` 和 `>` 尖括号以及单引号和双引号都被编码，而反引号则以 Unicode 方式转义。目标：触发执行 `alert()` 在字符串模板中。
search 参数被反射到一个 JavaScript 字面量模板中。必须先打破该模板字符串才能运行 `alert()` 从反射值中。
* 反引号字符（`` ` ``）用于界定模板字面量；页面对用户提供的反引号进行了转义（例如使用 Unicode 转义），从而阻止简单逃逸。
JS 插值差异示例（示意）：
```javascript
variable = "测试";
console.log("变量是：${variable}")
console.log(`变量是：${variable}`)
```
第一行会原样显示 `${variable}`，第二行则通过反引号解析变量。
* 尝试插入一个可运行的插值表达式 `alert()`:
```javascript
${alert(0)}
```
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