The Event Manager and Tickets Selling for WooCommerce WordPress plugin before 3.5.8 does not validate and escape the post_author_gutenberg parameter before using it in a SQL statement when creating/editing events, which could allow users with a role as low as contributor to perform SQL Injection attacks
https://wpscan.com/vulnerability/d881d725-d06b-464f-a25e-88f41b1f431f