On August 14th, 2026, we received a submission for an Unauthenticated Second-Order SQL Injection vulnerability in All-in-One WP Migration and Backup, a WordPress plugin with more than 5 million active installations. This vulnerability makes it possible for unauthenticated attackers to inject SQL that is later executed when a site administrator performs an archive restore, which can be used to leak the plugin’s secret key and ultimately achieve remote code execution, leading to complete site takeover.
