The Video Thumbnails WordPress plugin through 2.12.3 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).
Zafiyet ile ilgili Genel Bilgi, Etki ve Çözümleri için Devamını Oku
Kaynak: National Vulnerability Database