HackerOne: Race condition in claiming program credentials

Hi, Summary: I was invited to a private program and I tried to get test credentials so a request as follows was sent to your server: POST /graphql HTTP/1.1 Host: hackerone.com Connection: close Content-Length: 778 Accept: / X-Auth-Token: ████ User-Agent: Mozilla/5.0 Windows NT 10.0; Win64; x64...