What web developers don’t understand about CORS | Learn with HTB
Say it with us: CORS is not a security feature.
If you are a web developer or a security researcher, this is one concept you need to master to avoid building or missing critical vulnerabilities.
In this episode of Learn with HTB, @PinkDraconian breaks down why so many people misunderstand Cross Origin Resource Sharing and how it relates to the Same Origin Policy. You will learn why the browser uses SOP to keep your data safe and how CORS is actually used to punch controlled holes in that security rather than acting as a shield itself.
We dive deep into common misconceptions, including the dangerous belief that a proper CORS setup can prevent CSRF attacks. Through a live demo, we show you exactly how an attacker can still trigger authenticated actions even when CORS is missing. We also explore common misconfigurations, such as reflecting origins while allowing credentials, and explain why modern browsers block certain combinations like wildcards with credentials.
Are you ready to test your knowledge? Watch the full video and answer our question in the comments for a chance to win a special prize next week.
If you want to take your skills further, check out our Advanced XSS and CSRF Exploitation module on HTB Academy or aim for the Certified Web Exploitation Specialist certification: https://academy.hackthebox.com/previe...
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