Description
WordPress Plugin Events Manager Extended is prone to multiple HTML injection vulnerabilities because it fails to properly sanitize user-supplied input. Attacker-supplied HTML and script code would execute in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user; other attacks are also possible. WordPress Plugin Events Manager Extended version 3.1.2 is vulnerable; other versions may also be affected.
Remediation
Update to the latest version
References
http://www.exploit-db.com/exploits/14923/
http://packetstormsecurity.com/files/view/93555/wordpressem-xss.txt