Multiple Authenticated (admin+) Persistent Cross-Site Scripting (XSS) vulnerabilities in Adam Skaat's Countdown & Clock plugin <= 2.3.2 at WordPress via &ycd-countdown-width &ycd-progress-height &ycd-progress-width &ycd-button-margin-top &ycd-button-margin-right &ycd-button-margin-bottom &ycd-button-margin-left &ycd-circle-countdown-before-countdown &ycd-circle-countdown-after-countdown vulnerable parameters.