this post was submitted on 13 Mar 2026
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Programming

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is it a security issue that All the supabase requests are coming directly from client instead of the backend ( vercel ) ? (programming.dev)
submitted 3 days ago by ghodawalaaman@programming.dev to c/programming@programming.dev
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Hello,

recently I was working on a project entirely made by AI. at first it looked plausible but as I dig deeper into the code I found out ton of security issues. we solved the security issues one by one. ( thankfully the site isn't released yet and only have beta testing users )

my question is that is it considered a security issue if I let the client ( browser ) make the supabase api call instead of routing those requests through the backend ( vercel ) even when I have made policies that prevents unauthorized users from submitting INSERT queries however I am still not sure if this is enough.

one thing that comes in my mind is that any authorized user can just spam the database and fill it with junk data but I think I can just ban that user and delete all the junk data relatively easily using a SQL query?

the thing is that I don't want to refactor AI code and make it "use server" instead of "use client". since I have to make a ton of changes and I am still learning Nextjs. ( thinking about using AI to fix AI code but I don't think it will work and don't want more AI slop in the codebase )

any suggestions are appreciated!

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[–] nous@programming.dev 3 points 3 days ago

Yes it is a security issue. But almost everything is. You can make it secure enough with the right policies. However it overall increases the attack surface of your application and has a greater chance that you missed something or miss configured the policies. So many firebase apps have been hacked because of miss configured access to the database.

So it puts more work on you to get things right.