We are aware of a critical issue with NBXplorer being unable to process specially crafted transaction in the Bitcoin blockchain block 896727.
Our team has already deployed a fix. To resolve the issue with your BTCPay, update your NBXplorer to version 2.5.26.
If you're on the 2.x branch of BTCPay Server using btcpayserver-docker, simply click Update button in Server administration (or run
http://btcpay-update.sh)
and the issue will be resolved.
If you're on a pre-2.0 version and aren't ready to move to 2.x yet, you can switch to the 1.13.x branch and use it to bump the NBXplorer dependency.
https://github.com/btcpayserver/btcpayserver-docker/tree/1.13.x
Thanks to everyone who reported the issue and allowed us to quickly deploy a fix.
For more details, please visit GitHub and review Nicolas Dorier PR:
https://github.com/MetacoSA/NBitcoin/pull/1269