Is my v0 app safe to launch?
Paste your address. We check your live v0 app the way a stranger would, then tell you in plain English what could cost you money, and how to fix it.
Free. No sign-up. We only look at what any visitor can already see.
Could end your business
Anyone on the internet can read your customer list.
what we didasked your site for its customer list, without signing in
what it showedthe whole table, with names, emails and phone numbers
What it means for youNo login, no password, no attacker needed. Someone who finds the address copies the whole table. This is the kind of leak you may have to tell every customer about.
This is how every finding is written. No jargon, ever.
About v0
Working is not the same as safe.
v0, from Vercel, turns a description into a working interface and the app behind it. It is strongest at the part people see and click, and it will happily write the code that talks to your database too.
Where your data livesv0 connects a database through the Vercel Marketplace, most often Supabase or Neon. Where it is Supabase, the read-rule question applies. Where it is Neon, which is plain Postgres, your app’s own code is the only thing deciding who can read what.
What we find
The faults we find in v0 apps.
Written the way your own report would write them. These live in the app v0 built for you, not in v0’s own service, which is why only a check of your app answers it.
Could end your business
Anyone on the internet can read your customer list.
What it means for youNo login, no password, no attacker needed. Someone who finds the address copies the whole table. This is the kind of leak you may have to tell every customer about.
what we didasked your site for its customer list, without signing in
what it showedthe whole table, with names, emails and phone numbers
Could end your business
Your app takes a visitor at their word about who they are.
What it means for youSomeone asks for customer 124's details and is handed them, because nothing ever checked they were customer 124. Every record becomes reachable one number at a time.
what we didread the code where your app decides whose data to send back
what it showedno check that the person asking owns what they asked for
Could end your business
Your master key is in the code every visitor downloads.
What it means for youThat key ignores every rule you set about who may see what. Anyone who looks can read, change or delete everything you hold, including every customer record.
what we didread the code your site hands to every browser
what it showeda master key, in a file any visitor can open
The honest part
What this check cannot see.
Every scanner looks cleaner if it stays quiet about what it missed. We would rather tell you.
Could not checkReading the code that decides who may see what needs you to connect the project. Without it we check everything reachable from outside and tell you plainly which questions we left unanswered.
Check one thing at a time