A Bolt.new app is generated and deployed fast enough that security review is easy to skip entirely between prompt and production. The most common gaps are the same ones any rapidly scaffolded app ships: environment variables or API keys reachable in the compiled frontend bundle, no security headers set, and no verification that a backend's access rules match what the UI implies.
Bolt.new's speed is the whole point — prompt to a running, deployed app in one flow. That same speed means there's no natural checkpoint where someone reviews what got shipped to the public internet before it's live.
Common issues in Bolt.new apps
Secrets compiled into the client bundle
Any environment variable referenced from client-side code in a Bolt-generated app ships to the browser exactly as written — including keys that were only meant for a server-side call the generated code happened to make client-side.
No security headers configured
Generated deploy configs default to whatever the underlying framework ships with, which for most frameworks means no CSP, HSTS, or frame-protection headers unless explicitly added.
Backend access rules not reviewed
If the generated backend uses a BaaS provider, its default access rules (open, restricted, or somewhere in between) may not match what the generated frontend's auth flow implies — the UI can look gated while the API underneath isn't.