The WP Map Block WordPress plugin before 2.0.3 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/f90b7ad6-e2a2-4833-a390-a78c64dc2382/