free server for pass challenge

Off-topic
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1

for challenge i need of an server where put some xlm file to test xxe vulnerability where I find it for free?

2

something like this maybe? GitHub - jbarone/xxelab: A simple web app with a XXE vulnerability.

Googling for “xxe virtual machine” shows a few interesting things, also on Vulnhub

3

@GDX said:
something like this maybe? GitHub - jbarone/xxelab: A simple web app with a XXE vulnerability.

Googling for “xxe virtual machine” shows a few interesting things, also on Vulnhub

thanks