BTCPay Server says:

"There is a critical vulnerability being actively exploited on BTCPay Server, which can result in the loss of funds.

Please update your BTCPayServer to 2.4.2 by going to Admin Dashboard -> Server -> Maintenance -> Update & verify the 2.4.2 version string in the footer.

If you are unable to update right away, turn off your BTCPay Server to prevent unauthorized access until you can update."

https://x.com/i/status/2085755643659522240