It was discovered that calamares-settings-ubuntu allowed creating the first user with a blank password, contrary to expectations.
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "1:22.04.4.3",
"binary_name": "calamares-settings-lubuntu"
},
{
"binary_version": "1:22.04.4.3",
"binary_name": "calamares-settings-ubuntu-common"
},
{
"binary_version": "1:22.04.4.3",
"binary_name": "calamares-settings-ubuntustudio"
}
]
}