What are common security mistakes in Bolt.new apps?
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Short Answer
The mistakes we see repeatedly in Bolt.new apps: exposed api keys; missing supabase rls; no security headers. Each one is a specific failure mode of Bolt.new's workflow — not generic programming mistakes.
Detailed Answer
The mistakes we actually see in Bolt.new apps
These aren't hypothetical — they're what VAS finds when it scans a Bolt.new app for the first time. Listed in order of how often they appear:
1. Exposed API Keys
*Why it happens:* OpenAI, Stripe, and other secret keys hardcoded directly in frontend JavaScript bundles. Attackers can extract these keys and use your API quotas, make purchases, or access your services.
*Fix:* Verify with a scan — catching this manually requires knowing it exists, which is the problem.
2. Missing Supabase RLS
*Why it happens:* Database tables accessible to anyone with the anon key because Row Level Security policies haven't been configured. This means any user can read, modify, or delete all data in exposed tables.
*Fix:* Verify with a scan — catching this manually requires knowing it exists, which is the problem.
3. No Security Headers
*Why it happens:* Missing Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options headers leave your app vulnerable to cross-site scripting, man-in-the-middle attacks, and clickjacking.
*Fix:* Verify with a scan — catching this manually requires knowing it exists, which is the problem.
4. Weak Authentication
*Why it happens:* No minimum password requirements, missing email verification, and lack of rate limiting on login endpoints allows brute force attacks and account takeovers.
*Fix:* Verify with a scan — catching this manually requires knowing it exists, which is the problem.
5. Source Map Exposure
*Why it happens:* Production source maps uploaded to hosting reveal your entire application source code, including business logic, API endpoints, and potentially sensitive comments.
*Fix:* Verify with a scan — catching this manually requires knowing it exists, which is the problem.
Why these specifically show up in Bolt.new (and not as much elsewhere)
Bolt.new's workflow optimizes for speed — idea to deployed app in minutes. The mistakes above aren't character flaws, they're the predictable output of a speed-optimized workflow that doesn't enforce security gates. The fix is treating security gates as non-negotiable, not as "I'll get to it later."
Security Research & Statistics
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
developers using vibe coding platforms like Lovable, Bolt, and Replit
Source: Combined platform statistics 2024-2025
Expert Perspectives
“There's a new kind of coding I call 'vibe coding', where you fully give in to the vibes, embrace exponentials, and forget that the code even exists.”
“It's not really coding - I just see stuff, say stuff, run stuff, and copy paste stuff, and it mostly works.”
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How common are these mistakes in Bolt.new apps — is this overstated?
Understated, if anything. The majority of Bolt.new apps scanned for the first time have at least one of the high-likelihood mistakes above. "Exposed API Keys" in particular is the default state of a new Bolt.new app before any security work. Our sample skews toward apps whose owners care enough to scan — the base rate for never-scanned Bolt.new apps is higher.
What are the actual consequences when these mistakes ship to production?
The consequence ladder: (a) data exposure — emails, passwords, PII, payment info readable by anyone; (b) account takeover — if auth is weak, legitimate accounts get hijacked; (c) third-party abuse — an exposed OpenAI or Stripe key gets drained of quota or money; (d) regulatory — GDPR/CCPA notification requirements trigger at ~first exposure; (e) reputational — "Bolt.new app data breach" is a headline that doesn't age well. Each consequence compounds the next.
How do I avoid these mistakes when building with Bolt.new?
Three non-negotiable habits: (1) Configure Row Level Security (RLS) policies at table/collection creation — before writing any feature code. (2) Treat any paste-a-key-into-code as a bug from the first keystroke, not "I'll move it to env vars later." (3) Run a VAS scan before every production deploy — five minutes of scanning prevents hours-to-weeks of breach response. Specifically: start with exposed api keys.
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