The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Nmedia User File Uploader Plugin | — | Update nmedia-user-file-uploader plugin to version 18.3, or a newer patched version | May 15, 2025 | Jul 12, 2021 |
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