Multiple cross-site request forgery (CSRF) vulnerabilities in index.php in Digital Signage Xibo 1.4.2 allow remote attackers to hijack the authentication of administrators for requests that (1) add a new administrator via the AddUser action or (2) conduct cross-site scripting (XSS) attacks, as demonstrated by CVE-2013-4888.
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.