First stop using the card, make a list of outstanding debts, notify the creditors, and pay the outstanding balance if you're name is on the account.
Your assets will be used to pay back your credit card debt. This will happen before the remaining assets are distributed amongst your heirs.
Joint account holders will be responsible for paying the remaining debt. Authorized users may not be legally responsible for repayment.
The executor of your estate cannot use life insurance proceeds, brokerage accounts, retirement accounts, or assets in a living trust to repay the debt.
Secured debt like homes are not forgiven. If the mortgage is not paid, the bank can take the house to satify the remaining loan.