Preflights, credentials, and why a CORS error is almost always a server configuration problem.
3 articles
Listed inCORSWeb Securityon
A CORS error is a server configuration problem wearing a browser error message. What the preflight actually asks, what breaks when credentials are involved, and the fixes that are not a proxy.
Listed inCORSWeb Securityon
MDN on simple versus preflighted requests, the full header set, and the rules credentials change.
Listed inCORSWeb Securityon
Preflights, credentials, and why a CORS error is almost always a server configuration problem.