Single Content Sync allows exporting and importing content, referenced entities, and files between Drupal sites. The module fails to sufficiently validate file sources and destinations during content imports, leading to Path Traversal. This allows an attacker to write arbitrary files, disclose sensitive local files accessible to the web server, or trigger requests to internal or external resources. Depending on server configuration, this may result in remote code execution. Exploitation requires the *import single content* permission.