The WP Ultimate CSV Importer WordPress plugin before 9.2 does not use a site-specific secret when deriving the storage location of the import logs it writes under the uploads directory, nor does it block direct access to them, allowing unauthenticated attackers to retrieve the personal data of users imported from a CSV file.

The WP Ultimate CSV Importer WordPress plugin before 9.2 does not properly validate the file types contained in an uploaded archive nor sanitise their content before storing them in a publicly served location, allowing high privilege users such as administrators to achieve Stored Cross-Site Scripting. On Multisite installations a site Administrator does not hold the unfilteredhtml capability, so this lets them run scripts in the session of users who view the file, including Network Super Admins.

Insertion of Sensitive Information Into Sent Data vulnerability in Smackcoders Inc. WP Ultimate CSV Importer wp-ultimate-csv-importer allows Retrieve Embedded Sensitive Data.This issue affects WP Ultimate CSV Importer: from n/a through 9.1.