Is Convex safe? How to secure your Convex app
Convex is a reactive backend with code-defined access control — your security lives in your functions and auth rules.
Convex is a secure, well-designed backend. Because data access runs through your server functions, security depends on writing proper authentication and authorization checks in them. The platform is sound; the risk is functions that skip auth or trust client input.
Convex is a secure, modern reactive backend where data access flows through server-side functions you write. That design is sound, but it puts security in your hands: a query or mutation that forgets to check the authenticated user, or that trusts client-supplied arguments, can expose or corrupt data. Before launch, confirm every function enforces authentication and authorization and validates its inputs.
Convex security at a glance
- Platform type
- Reactive backend (functions, database, auth)
- Most common risk
- Functions missing auth/authorization checks
- Also watch for
- Trusting unvalidated client arguments
- How to check
- Audit queries/mutations for auth and validation
- Safe to launch?
- Yes — with proper checks in your functions
The most common Convex security risks
Missing authorization in functions
A query or mutation without an identity check can return or modify data for any caller. Enforce auth in every function.
Unvalidated arguments
Trusting client-supplied arguments lets callers reach data they shouldn't. Validate and scope inputs.
Over-broad public functions
Public functions are callable by anyone. Keep sensitive logic behind authenticated, authorized paths.
How to secure your Convex app
Check your Convex app in 60 seconds
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Convex security FAQ
- Is Convex secure?
- Yes. Convex is a secure backend. Because access control lives in your server functions, the key is to enforce authentication and authorization and validate inputs in every function before launch.