Hiring a Base44 developer to finish or fix your app

What Base44 actually is

Base44 describes itself as a no-code AI platform for building apps, websites and AI agents from a plain-language description. It bundles the backend, data storage, logins and payments together, so a non-technical founder can go from an idea to something working without writing code. Base44 was acquired by Wix in 2025 and now sits inside Wix's wider platform, while still operating as its own product for building custom apps rather than websites.

The authentication flaw researchers found

In mid-2025, security researchers at Wiz disclosed a critical vulnerability in Base44 that was remarkably simple to exploit: certain registration and email-verification endpoints did not actually require authentication, so anyone who knew an app's non-secret app ID could create a verified account for that app, bypassing every access control, including single sign-on. Researchers confirmed this worked against real enterprise applications built on Base44, including internal tools handling sensitive HR and personal data. Wix, which had acquired Base44 only a month earlier, rolled out a fix within 24 hours of being notified, and there is no evidence the flaw was exploited maliciously before it was patched.

The fix came fast, which is a genuinely good sign about how Wix handled it. But the flaw itself is a clear reminder that a platform promising logins, payments and data storage out of the box has not necessarily tested every path into that system the way a dedicated security review would. Any Base44 app, especially one handling real customer or business data, deserves exactly that kind of review before you rely on it.

What to actually check on a Base44 app

• Authentication end to end, not just that a login screen exists, but that every path into the app, including any registration or verification step, actually requires what it should.
• What data the app stores and who can reach it, the same question that matters for any app, asked explicitly rather than assumed because the platform says it handles it.
• How payments are wired up, since Base44 bundles payment handling as part of its built-in backend.
• What happens if you need to move off Base44 later, since a platform that bundles everything together, backend, data and payments, can make an eventual migration more involved than one built on more standard, separable parts.

How I work with Base44 apps

I start with a proper authentication and access review, checking every way into the app, not just the obvious login screen, given what has already been found on this specific platform before. I review how data is stored and who can reach it, and how payments are actually wired up. Where it makes sense, I move the app onto infrastructure your company owns outright, rather than leaving it fully dependent on one platform's backend.

Once I've made the core solid, I also set up a safe environment where you can keep using Base44 to make small changes yourself, a new page, a copy change, a tweak to a screen. I separate the parts that are safe to touch from the parts that control security, payments and data, so an AI-assisted change you make on a Tuesday afternoon cannot quietly break your database or expose a customer's data. You stay in control without needing to learn to code, and you come to me for anything bigger or anything that touches that protected core.

After launch, I can keep checking the app every week through the Care plan, or hand it back to you with clear notes on exactly what I found and fixed.

What this typically costs to fix or take over

As a broad reference: reviewing and fixing what exists starts at around $1,500, and finishing or rebuilding the parts that need it starts higher, always a fixed price agreed in writing before any work begins, never an hourly rate. My AI app development cost guide covers what actually moves that number.