The Shared Files – Frontend File Upload Form & Secure File Sharing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dfxp File uploads in all versions up to, and including, 1.7.42 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the dfxp file. This issue affects only Apache-based environments, where dfxp files are handled by default.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Shared Files – File Upload Form Shared Files.This issue affects Shared Files: from n/a through 1.7.28.

Missing Authorization vulnerability in Shared Files PRO Shared Files.This issue affects Shared Files: from n/a through 1.7.16.

The Shared Files WordPress plugin before 1.7.6 does not return the right Content-Type header for the specified uploaded file. Therefore, an attacker can upload an allowed file extension injected with malicious scripts.

The Shared Files WordPress plugin before 1.6.61 does not sanitise and escape the Download Counter Text settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

The Easy Download Manager and File Sharing Plugin with frontend file upload – a better Media Library — Shared Files WordPress plugin before 1.6.57 does not sanitise and escape some of its settings before outputting them in attributes, which could lead to Stored Cross-Site Scripting issues.