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CVE-2025-5746 is an arbitrary file upload vulnerability in the Drag and Drop Multiple File Upload (Pro) - WooCommerce plugin for WordPress. The flaw is caused by missing or insufficient file type validation in the dnd_upload_cf7_upload_chunks() function. According to the provided content, the vulnerable upload path is exposed through the WordPress AJAX endpoint /wp-admin/admin-ajax.php using the dnd_upload_cf7_upload_chunks action, and it can be exploited without authentication. The issue affects Drag and Drop Multiple File Upload (Pro) - WooCommerce versions 5.0 through 5.0.5 when bundled with the PrintSpace theme, and the standalone Drag and Drop Multiple File Upload plugin in all versions up to and including 1.7.1. Uploaded files are stored in the wp-content/uploads/ directory. The content further indicates that the plugin's chunked upload mechanism can be abused to split a malicious payload into smaller parts and reassemble it server-side without re-validating the final file, enabling upload of attacker-controlled files such as PHP payloads. Although a .htaccess file is intended to block PHP execution in the upload directory, that protection may not be effective on Nginx, IIS, or misconfigured servers, making remote code execution possible in some deployments.
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