Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ashan Jay EventON allows Stored XSS.This issue affects EventON: from n/a through 2.2.14.
The EventON-RSVP WordPress plugin before 2.9.5 does not sanitise and escape some parameters before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin