Developers don't understand CORS (2019)
This article discusses a common misunderstanding among web developers regarding Cross-Origin Resource Sharing (CORS) policies. It highlights how Zoom previously implemented a flawed workaround for local web server communication, which inadvertently created a security vulnerability.
Why it matters
Understanding browser security protocols like CORS is critical for developers to prevent exploitable vulnerabilities in web applications.
One of the best things about working in full stack consulting is that I get to work with a great number of developers with different skill levels in companies from various sizes and industries. This provides an opportunity to see what universal struggles come up. One that seems common and relevant recently is this: Too many web developers do not understand how CORS works.
The article provides a technical analysis of a security concept without political or ideological framing.
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