The WP Import Export Lite plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'wpie_tempalte_import' function in all versions up to, and including, 3.9.28. This makes it possible for authenticated attackers, with Subscriber-level access and above, and permissions granted by an Administrator, to upload arbitrary files on the affected site's server which may make remote code execution possible.
The WP Import Export Lite plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'wpie_parse_upload_data' function in all versions up to, and including, 3.9.29. This makes it possible for authenticated attackers, with Subscriber-level access and above, and permissions granted by an Administrator, to upload arbitrary files on the affected site's server which may make remote code execution possible. The vulnerability was partially patched in version 3.9.29.
The WP Import Export Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘wpiePreviewData’ function in all versions up to, and including, 3.9.27 due to insufficient input sanitization and output escaping. 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 WP Import Export WordPress plugin (both free and premium versions) is vulnerable to unauthenticated sensitive data disclosure due to a missing capability check on the download function wpie_process_file_download found in the ~/includes/classes/class-wpie-general.php file. This made it possible for unauthenticated attackers to download any imported or exported information from a vulnerable site which can contain sensitive information like user data. This affects versions up to, and including, 3.9.15.