Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in A.H.C. Waasdorp Simple Google Calendar Outlook Events Block Widget allows Stored XSS.This issue affects Simple Google Calendar Outlook Events Block Widget: from n/a through 2.5.0.
Solution:
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.