Good afternoon.

Today I will not tell you about typical vulnerabilities in oauth: there is no csrf check, you can change the redirect_uri, and so on. You can easily find all this on the Internet, because many articles have been written about this.

I want to tell you about a feature that I very often meet in popular private programs. I want to say right away that you should have at least a basic understanding of oauth.

Sorry in advance for my english.

So, let’s say you have oauth on your project.

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As you can see, this project uses authorization via (a popular Russian social network). …


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