Study finds many Lovable-built apps expose Supabase data on first page load

Researchers at Crissy Field examined 159,041 Lovable projects, of which 34,545 used Supabase. Of 24,664 sites examined more closely, many were already serving database records to visitors without any login. Further read-only requests with the public key surfaced email addresses in thousands of sites, along with more sensitive items such as passport details and chat messages. The authors caution that data appearing on first load is not automatically a confirmed leak, and the roughly 30% figure applies only to the sampled sites, not all Lovable apps. Security advisers stress that anon keys are meant to be public, so the real risk lies in missing or permissive row-level security rules.