Auth. (author+) Cross-Site Scripting (XSS) vulnerability in Wpsoul Greenshift – animation and page builder blocks plugin <= 4.9.9 versions.

The Greenshift WordPress plugin before 5.0 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.

The Greenshift WordPress plugin before 4.8.9 does not validate and escape one of its shortcode attributes, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attack.