This attack is used to steal data from another website.
Say you're on dev.to, you don't want dev.to to access your emails! But dev.to can still execute their own scripts, which makes sense.
Pardon my noob but shouldn't it be fixed with CORS instead?
Cors wouldn't work on old browsers, and CORS is also used on the source site to limit what can be accessed from this website. What is happening here is the opposite: An attacking website want to access information from another one.
Also note that this vulnerability is over 10 years old, well older than CORS :)
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This attack is used to steal data from another website.
Say you're on dev.to, you don't want dev.to to access your emails!
But dev.to can still execute their own scripts, which makes sense.
Pardon my noob but shouldn't it be fixed with CORS instead?
Cors wouldn't work on old browsers, and CORS is also used on the source site to limit what can be accessed from this website.
What is happening here is the opposite: An attacking website want to access information from another one.
Also note that this vulnerability is over 10 years old, well older than CORS :)