The Shield Security WordPress plugin before 20.0.6 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

The Shield Security – Smart Bot Blocking & Intrusion Prevention Security plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 18.5.9 via the render_action_template parameter. This makes it possible for unauthenticated attacker to include and execute PHP files on the server, allowing the execution of any PHP code in those files.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Shield Security Shield Security – Smart Bot Blocking & Intrusion Prevention Security allows Stored XSS.This issue affects Shield Security – Smart Bot Blocking & Intrusion Prevention Security: from n/a through 18.5.7.

The Shield Security plugin for WordPress is vulnerable to Missing Authorization on the 'theme-plugin-file' AJAX action in versions up to, and including, 17.0.17. This allows authenticated attackers to add arbitrary audit log entries indicating that a theme or plugin has been edited, and is also a vector for Cross-Site Scripting via CVE-2023-0992.

The Shield Security plugin for WordPress is vulnerable to stored Cross-Site Scripting in versions up to, and including, 17.0.17 via the 'User-Agent' header. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Shield Security WordPress plugin before 13.0.6 does not sanitise and escape admin notes, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.