Shopify: Cache poisoning via X-Forwarded-Host in www.shopify.com/partners/blog

Hello, run in loop requests with X-Forwarded-Host: yourhackerzsite.com - after some time You will notice in response yourhackerzsite.com F981839 now remove X-Forwarded-Host - there still be our url: F981841 i've logged to my VPS to verify this bug and downloaded poisoned page...