> 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/es/web/xss/dom-xss-in-href-attribute-with-jquery-location-search.md).

# DOM XSS en un atributo href con jQuery y location.search

### DOM XSS en el atributo href de un ancla de jQuery usando location.search como fuente

Vulnerabilidad DOM XSS en la página de comentarios. El sitio usa la `$` función de jQuery para seleccionar un `<a>` elemento (el enlace de regreso) y reemplaza su `href` atributo con un valor extraído de `location.search`. Este valor puede ser controlado a través de la URL.

**Estudio del laboratorio:**/ Haz que el enlace "back" active `alert(document.cookie)` cuando haces clic en él (ejecuta una alerta que contenga las cookies de la página).

<figure><img src="/files/ce5730fef6721aa71bc24938751445ba3168c0c5" alt=""><figcaption></figcaption></figure>

**Observaciones:**

* El botón "back" se refiere a la raíz del sitio; está conectado a un `returnPath` parámetro en la URL.
* Modificando `returnPath`, puedes definir el destino del `href` enlace.

Usa un esquema JavaScript en `href`:

```javascript
javascript:alert(0)
```

Para recuperar la cookie de sesión y mostrar:

```javascript
javascript:alert(document.cookie)
```

<figure><img src="/files/cb708cedc6a93e14b80dfa1982328f8d2ee9986f" alt=""><figcaption></figcaption></figure>


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