The GiveWP WordPress plugin before 4.16.3 does not properly restrict access to a REST API endpoint that returns recurring-donation records, allowing unauthenticated users to retrieve information about anonymous recurring donors, including their name and subscription details.
The GiveWP WordPress plugin before 4.16.3 does not escape a donation-form template setting before outputting it in an HTML attribute, allowing users with the GiveWP Worker role and above to inject arbitrary web scripts that execute on the public donation form viewed by any visitor.