The Simple-File-List Plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 4.2.2 via the rename function which can be used to rename uploaded PHP code with a png extension to use a php extension. This allows unauthenticated attackers to execute code on the server.
The Simple File List WordPress plugin before 6.1.13 does not sanitise and escape a generated URL before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting which could be used against admins.
The Simple File List WordPress plugin before 6.0.10 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
The Simple File List WordPress plugin before 4.4.12 does not implement nonce checks, which could allow attackers to make a logged in admin create new page and change it's content via a CSRF attack.
The Simple File List WordPress plugin before 4.4.12 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
The Simple File List WordPress plugin before 4.4.12 does not escape parameters before outputting them back in attributes, leading to Reflected Cross-Site Scripting
The Simple File List WordPress plugin is vulnerable to Arbitrary File Download via the eeFile parameter found in the ~/includes/ee-downloader.php file due to missing controls which makes it possible unauthenticated attackers to supply a path to a file that will subsequently be downloaded, in versions up to and including 3.2.7.
WordPress Plugin Simple File List before 4.2.8 is prone to a vulnerability that lets attackers delete arbitrary files because the application fails to properly verify user-supplied input.