Minimum permissions to CDK bootstrap and account and region

cdk-bootstrap-policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "0",
      "Effect": "Allow",
      "Action": "cloudformation:DescribeStacks",
      "Resource": "arn:aws:cloudformation:<REGION>:<ACCOUNT_NUMBER>:stack/CDKToolkit/*"
    },
    {
      "Sid": "1",
      "Effect": "Allow",
      "Action": "cloudformation:CreateChangeSet",
      "Resource": "arn:aws:cloudformation:<REGION>:<ACCOUNT_NUMBER>:stack/CDKToolkit/*"
    },
    {
      "Sid": "2",
      "Effect": "Allow",
      "Action": "cloudformation:DescribeChangeSet",
      "Resource": "arn:aws:cloudformation:<REGION>:<ACCOUNT_NUMBER>:stack/CDKToolkit/*"
    },
    {
      "Sid": "3",
      "Effect": "Allow",
      "Action": "cloudformation:ExecuteChangeSet",
      "Resource": "arn:aws:cloudformation:<REGION>:<ACCOUNT_NUMBER>:stack/CDKToolkit/*"
    },
    {
      "Sid": "4",
      "Effect": "Allow",
      "Action": "cloudformation:GetTemplate",
      "Resource": "arn:aws:cloudformation:<REGION>:<ACCOUNT_NUMBER>:stack/CDKToolkit/*"
    }
  ]
}