Vaadin Framework src-attribute Cross Site Scripting Vulnerability

Summary
This web application is running with the Vaadin Framework which is prone to cross-site scripting because the application fails to properly sanitize user-supplied input.
Impact
This could potentially, in certain situations, allow a malicious user to inject content, such as javascript, in order to perform a cross-site scripting (XSS) attack.
Solution
Upgrade to Vaadin Framework version 6.8.14 or later For updates refer to http://www.vaadin.com/releases
Insight
Proper escaping of the src-attribute on the client side was not ensured when using icons for OptionGroup items.
Affected
Vaadin Framework versions from 6.0.0 up to 6.8.13
Detection
Check the version.
References