Kentico is an ASP.NET-based content management system (CMS) from Kentico, Inc. A security vulnerability exists in Kentico Xperience CMS, which stems from the fact that Kentico Xperience CMS version 13.0 13.0.43 is prone to a persistent cross-site scripting (XSS) vulnerability (also known as stored or second-order XSS). An attacker could exploit this vulnerability to execute client-side code.