## https://sploitus.com/exploit?id=WPEX-ID:A2483ECF-42A6-470A-B965-4E05069D1CEF
1. Insert a Top 10 Popular Posts block, and give it the following additional CSS classes: " onmouseover="alert(1)" style="background:red;width:100px;height:100px;"
2. Hover over the block where it's inserted, and the JavaScript alert will trigger successfully.