The Horizontal scrolling announcement for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'horizontal-scrolling' shortcode in versions up to, and including, 9.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Horizontal scrolling announcement plugin for WordPress is vulnerable to SQL Injection via the plugin's [horizontal-scrolling] shortcode in versions up to, and including, 9.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with subscriber-level and above permissions to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.