Vulnerable web application running locally for testing purposes

Hello, I need to test my custom website vulnerability scanner against a web application which contains some vulnerabilities (I just want to detect them). I will build something custom one day, but I am looking for ready-to-use alternatives to have any feedback faster - do you have any recommendations? I don't think it's a good approach to use this scanner against live applications on the internet, so it's better to run it on my own and have control over it. …

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