The Download Manager WordPress plugin before 3.3.07 doesn't prevent directory listing on web servers that don't use htaccess, allowing unauthorized access of files.
Missing Authorization vulnerability in W3 Eden, Inc. Download Manager allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Download Manager: from n/a through 3.3.03.
The Download Manager WordPress plugin before 3.3.03 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 Download Manager plugin for WordPress is vulnerable to unauthorized download of password-protected content due to improper password validation on the checkFilePassword function in all versions up to, and including, 3.3.03. This makes it possible for unauthenticated attackers to download password-protected files.
The The Download Manager plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.3.03. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wpdm_all_packages' shortcode in all versions up to, and including, 3.2.97 due to insufficient input sanitization and output escaping on the 'cols' parameter. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
The Download Manager plugin for WordPress is vulnerable to unauthorized access of data due to an improper authorization check on the 'protectMediaLibrary' function in all versions up to, and including, 3.2.89. This makes it possible for unauthenticated attackers to download password-protected files.
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a user's Display Name in all versions up to, and including, 3.2.86 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability requires social engineering to successfully exploit, and the impact would be very limited due to the attacker requiring a user to login as the user with the injected payload for execution.
The Download Manager Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via wpdm_user_dashboard, wpdm_package, wpdm_packages, wpdm_search_result, and wpdm_tag shortcodes in all versions up to, and including, 3.2.92 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.