The Admin and Customer Messages After Order for WooCommerce: OrderConvo WordPress plugin through 15.1 does not validate the path of files to be downloaded, which could allow unauthenticated users (before version 15.0) and any authenticated user such as a Subscriber (versions 15.0 to 15.1) to read arbitrary files on the server via a path traversal attack; the fix released in version 14 was incomplete and no fixed version is available.