> 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/stored-xss-in-html-context-without-encoding.md).

# XSS almacenado en contexto HTML sin codificación

### XSS almacenado en contexto HTML sin nada codificado

Esta es una vulnerabilidad de cross-site scripting almacenada en una función de comentarios de blog. Los datos introducidos en el formulario de comentarios se insertan en el HTML sin ser codificados.

#### Objetivo del laboratorio

Envía un comentario que se ejecute `alert()` cuando se muestre la página de la publicación (resuelve el laboratorio provocando la alerta del visitante).

```javascript
<script>alert("comentarios")</script>
<script>alert("nombre")</script>
<script>alert("correo electrónico")</script>
<script>alert("sitio web")</script>
```

<figure><img src="/files/f6477f0871c9adc9609247b51cf37b55916eda0f" alt=""><figcaption></figcaption></figure>

El formulario de comentarios es vulnerable (los campos enviados se insertan en el HTML sin codificación).

<figure><img src="/files/3ec4117e97c3aabd46016351b3831948af217adb" alt=""><figcaption></figcaption></figure>


---

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