App builders · StackBlitz
Bolt
StackBlitz’s in-browser AI app builder (bolt.new).
10Advisories
6critical
3high
1medium
2026-10-10Latest
Timeline · advisories per quarter
42025 Q1
12026 Q2
42026 Q3
12026 Q4
Named in sources
Reported for Bolt
01. Supabase tables readable by anyone with no loginA scan of 30,998 live vibe-coded apps found 57% of the Supabase-backed apps it could check served table rows to requests with no login. 
Lovable Bolt 
v0 +4 more 2026-08 02. Supabase service_role / secret key shipped to the browserThe service_role (or new sb_secret_) key bypasses every RLS policy. If it is in your JavaScript bundle, your whole database is public. Lovable Bolt v0 +4 more 2026-08 03. Unverified Stripe webhooks hand out free upgradesIf your Stripe webhook handler doesn’t verify the Stripe-Signature header, anyone can POST a fake “checkout.session.completed” event and your app will treat it as a real payment. Scans and audits find this in a large share of AI-built apps. 
Stripe Lovable Bolt +5 more 2026-05 04. Secrets leaked via NEXT_PUBLIC_ (or VITE_) environment variablesPrefixing a variable with NEXT_PUBLIC_ inlines it into the JavaScript every visitor downloads. AI tools often “fix” a missing-env error this way. Lovable Bolt v0 +4 more 2026-08
Lovable Bolt v0 +4 more 2026-08 02. Supabase service_role / secret key shipped to the browserThe service_role (or new sb_secret_) key bypasses every RLS policy. If it is in your JavaScript bundle, your whole database is public. Lovable Bolt v0 +4 more 2026-08 03. Unverified Stripe webhooks hand out free upgradesIf your Stripe webhook handler doesn’t verify the Stripe-Signature header, anyone can POST a fake “checkout.session.completed” event and your app will treat it as a real payment. Scans and audits find this in a large share of AI-built apps. Stripe Lovable Bolt +5 more 2026-05 04. Secrets leaked via NEXT_PUBLIC_ (or VITE_) environment variablesPrefixing a variable with NEXT_PUBLIC_ inlines it into the JavaScript every visitor downloads. AI tools often “fix” a missing-env error this way. Lovable Bolt v0 +4 more 2026-08 Same pattern
Also worth checking
01. Supabase RLS policies that check login but not ownershipA policy like using (auth.uid() is not null) has RLS on and mentions the user, so it passes Lovable’s scan. But it lets any logged-in user read every row, and on most apps anyone can sign up. 
Supabase Lovable Bolt +4 more 2026-10-10 02. UpGuard: 16,326 Supabase databases had readable tablesUpGuard checked about 300,000 websites that use Supabase and found 16,326 databases with tables anyone could read. Over half showed signs of personal data, and a smaller share held passwords or auth tokens. Supabase 
Claude Code 
Codex CLI +4 more 2026-09-25 03. CVE-2025-29927: Next.js middleware authorization bypassSelf-hosted Next.js apps that did auth in middleware could be bypassed with the internal x-middleware-subrequest header. Relevant to any Next.js app, including ones generated by v0. 
Next.js v0 Bolt +2 more 2025-03 04. Authentication logic living entirely in the browserHiding a page or button in the UI is not access control. If the API or database doesn’t check the user, anyone can call it directly. Lovable 
Base44 Bolt +3 more 2025 05. Slopsquatting: AI suggests packages that don’t existA USENIX Security 2025 study found 19.7% of 2.23 million package suggestions from 16 code models were hallucinated. Attackers can register those names. Claude Code 
Copilot 
Cursor +5 more 2025 06. Protecting routes only in middlewareVercel recommends against middleware being the sole method of protecting routes. Check auth again where data is read or changed. Next.js v0 Bolt +2 more 2025-03
Supabase Lovable Bolt +4 more 2026-10-10 02. UpGuard: 16,326 Supabase databases had readable tablesUpGuard checked about 300,000 websites that use Supabase and found 16,326 databases with tables anyone could read. Over half showed signs of personal data, and a smaller share held passwords or auth tokens. Supabase Claude Code Codex CLI +4 more 2026-09-25 03. CVE-2025-29927: Next.js middleware authorization bypassSelf-hosted Next.js apps that did auth in middleware could be bypassed with the internal x-middleware-subrequest header. Relevant to any Next.js app, including ones generated by v0. Next.js v0 Bolt +2 more 2025-03 04. Authentication logic living entirely in the browserHiding a page or button in the UI is not access control. If the API or database doesn’t check the user, anyone can call it directly. Lovable Base44 Bolt +3 more 2025 05. Slopsquatting: AI suggests packages that don’t existA USENIX Security 2025 study found 19.7% of 2.23 million package suggestions from 16 code models were hallucinated. Attackers can register those names. Claude Code Copilot Cursor +5 more 2025 06. Protecting routes only in middlewareVercel recommends against middleware being the sole method of protecting routes. Check auth again where data is read or changed. Next.js v0 Bolt +2 more 2025-03