The OpenStreetMap for Gutenberg and WPBakery Page Builder (formerly Visual Composer) WordPress plugin through 1.2.0 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
https://wpscan.com/vulnerability/58c7a8ac-1acd-45b7-abe5-5635fbb5d4c1/