isbloginstalled in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation).
{
"cpes": [
"cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*"
],
"severity": "Critical"
}