> 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/dom-xss-with-innerhtml-and-location-search.md).
# 使用 innerHTML 和 location.search 的 DOM XSS
使用 innerHTML 和 location.search 的 DOM 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 验证和修复上下文。
### 使用来源 location.search 的 InnerHTML 入口中的 DOM XSS
博客搜索功能中的 DOM XSS 漏洞。代码获取了 `location.search` 并直接通过 `innerHTML`插入到 DOM 中，从而允许在该值来自 URL 时注入并运行 JavaScript。
**从观察到的代码中提取**
```javascript
function doSearchQuery(query) {
document.getElementById('searchMessage').innerHTML = query;
}
var query = (new URLSearchParams(window.location.search)).get('search');
if(query) {
doSearchQuery(query);
}
```
**测试的有效载荷**
* 简单有效载荷（未被解释）：/ ``
* 测试插入一个图像元素：/ ``/（由于未提供事件属性，因此不会触发脚本执行）
强制加载错误以触发一个 `onerror` 处理程序：/ `` /（此有效载荷使用了 `onerror` 事件属性来运行 `alert` 当图像加载失败时）
```javascript
```
脚本直接影响 `innerHTML` 并使用 `search` URL 的值；因此，包含事件处理程序（例如 `onerror`) 或可执行标签可能会导致代码执行。该 `` 有效载荷导致加载错误并运行 `alert("XSS")`，演示了 DOM XSS 漏洞。
---
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