Provide references for CVE-2021-3646.
Where can I find more information about CVE-2021-3646?
References are available at: https://huntr.dev/bounties/32e30ecf-31fa-45f6-8552-47250ef0e613, https://github.com/btcpayserver/btcpayserver/commit/fc4e47cec608cc3dba24b19d0145ac69320b975e.