Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Pluginic FancyPost – Best Ultimate Post Block, Post Grid, Layouts, Carousel, Slider For Gutenberg & Elementor allows Stored XSS.This issue affects FancyPost – Best Ultimate Post Block, Post Grid, Layouts, Carousel, Slider For Gutenberg & Elementor: from n/a through 5.3.1.