Supabase vs Firebase Security
Supabase and Firebase are the two most popular BaaS platforms for vibe coding tools like Lovable and Bolt. Both require proper security configuration, but their approaches differ significantly.
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The Verdict
Both platforms are secure when properly configured. Supabase offers more powerful security at the database level, while Firebase provides more accessible tooling for testing. The 'better' choice depends on your team's expertise.
Choose Supabase if you're comfortable with SQL and want database-level security. Choose Firebase if you prefer visual tools and simpler syntax. Either way, use VAS to verify your configuration before launch.
Industry Security Context
When comparing Supabase vs Firebase, consider these broader security trends.
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
of data breaches involve databases with misconfigured access controls
Source: Verizon Data Breach Investigations Report
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
“Vibe coding your way to a production codebase is clearly risky. Most of the work we do as software engineers involves evolving existing systems, where the quality and understandability of the underlying code is crucial.”
Using Supabase or Firebase?
Regardless of which platform you choose, VAS scans for security issues specific to your stack.
Start Security ScanFrequently Asked Questions
Which is more secure: Supabase RLS or Firebase Security Rules?
Neither is inherently more secure - both can be configured securely or insecurely. Supabase RLS runs at the database level (faster, harder to bypass), while Firebase Rules run per-request (more flexible, easier to test). The security depends on YOUR configuration, not the platform.
Can I migrate security rules between Supabase and Firebase?
Not directly - the syntax and models are completely different. RLS uses SQL policies, Firebase uses JSON rules. You'll need to rewrite your security logic when migrating. Consider documenting your security requirements in plain English first, then implementing in the target system.
Which platform has better security defaults?
Both have weak defaults: Supabase tables have RLS disabled by default; Firebase creates test mode rules that allow all access. Neither is secure out-of-the-box. You must configure security manually regardless of which platform you choose.