Event Timeline <= 1.1.6 - Admin+ Stored Cross-Site Scripting

The plugin does not sanitize and escape Timeline Text, which could allow high-privileged users such as admin to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed

PoC

Create/edit a Timeline, put the following payload in the “Text” field at the bottom: Click save (below the Text field, not the button on top of the page), then click Update The XSS will be triggered in post/page where the Timeline is embed