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Supabase and Lovable apps may expose data without login, researchers warn

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A Hamburg security firm, working with Handelsblatt, examined 159,041 Lovable projects and reported that some exposed personal data such as passport numbers, payment details and private messages to anyone without logging in. Of the projects using Supabase, roughly 24,664 sent database records on page load with no authentication, and about 30% of those responses included email addresses, though researchers stressed this is not a confirmed leak rate. The report documented several serious exposures, including tens of thousands of profiles and chat messages from a lifestyle forum and over 1,000 passport records from a service provider. Supabase's publishable key is intentionally public, so protection depends on row-level security and table grants inside the database. Developers are advised to check whether tables have row-level security enabled and to test them using only the public key.

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