# XXE

### 5/

Adding the DOCTYPE , a new ENTITY pointing to the filesystem root:

![](/files/yzJe5h0deDiZI7dw4nSy)

### 7/

Modify request with Burpsuite, you can see the data is in json type.

The response is: "You are posting JSON which does not work with a XXE"

![](/files/skZqKw1AUn6KTWQ3DhWq)

First, you must change Content-Type from application/json to application/xml. Next, do similarly with past challenge:

![](/files/STreUC5UIhTMf8KOTm3A)

### 11/ Blind XXE assignment

File to upload to webgoft:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY secret SYSTEM 'file:///home/webgoat/.webgoat-8.2.2//XXE/secret.txt'>
```

Modify Post request (post command with burpsuite) and edit to:

![](/files/IzBhBmU3l0fKoJTIqsmn)

Reload page and submit value you receive:

![](/files/GtT9HwPJEojgICXFcqbE)


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