Description The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
1. Add a checklist and for an item, enter `<script>alert(999)</script>`
2. Display the checklist via shortcode and view on the frontend to see the XSS