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by 15155 77 days ago
Timing attack on the preflight.
1 comments

The DNS lookup will take an indeterminate amount of time and the cors failure is cached. You can't really effectively do a timing attack, especially if the client and the real server take a random time to respond. You get exactly one sample.
detect-ccd.creativecloud.adobe.com returns NXDOMAIN. Why can't you request a different resource to get more than one attempt?