I have no clue what is going on with my app. The app has been calling a restlet without any problem for the last year. Since webnesday, I have a problem with CORS. Anyone had ever had that problem ?

NetSuite apparently cycled their SSL certificates. If you're using a URL to enable trust, you'll probably need to reauthorize.

Are you saying that I should re-create the integration ?

We had to reset our verification url to : https://NETSUITEACCTNUM.suitetalk.api.netsuite.com/services/NetSuitePort_2017_1 Replace NETSUITEACCTNUM with your account number. Not sure if it's the same situation, but it worked for us under this one circumstance. YMMV