How a Simple Equality Check Bug Created a Security Vulnerability in Next.js

A function that should have returned true or false was always returning true.

It's a cautionary tale about how modern framework 'magic' can sometimes lead to very surprising problems.

When too much magic in the codebase breaks security measures, you know something is way off.

But what happens when a function that looks 'perfect', a simple, one-line equality check, ends up creating a massive security hole?