AI & TechnologyBase44 App Rescue: 8 Problems to Fix Before Launch

Problems with real Base44 apps often show up in the data rules: who can sign up, who can read or change each table, and which backend functions run without a sign-in check. Base44 hosts your app and keeps its data in a database that Base44 runs for you, so there's no separate database to secure, but the rules on that data are yours to set. Base44's security guide says it directly: "You are responsible for your app's security settings."

Below are the eight problems to check before launch, how to test each one, and how to fix it. The facts come from Base44's documentation and from Wiz's security research, and I re-read each source on October 20, 2026. Base44's docs pages aren't dated, so plan details may change; check the current page before you rely on a limit. The how-to-check and how-to-fix steps are my own advice.

1. A 2025 flaw in how private apps worked

In July 2025, Wiz Research reported a flaw in the Base44 platform: "by providing only a non-secret app_id value to undocumented registration and email verification endpoints, an attacker could have created a verified account for private applications." Wiz says the fix came in less than 24 hours, with Wix "confirming that there was no evidence of past abuse."

The lesson outlasts the bug. Wiz's write-up also noted that the "Private with Beta authentication" option at the time "Still allows self-signup, effectively remaining public." That label is from 2025. Base44's current docs describe Private as invited people only, but it's still worth testing.

How to check: read your app's access setting and the current Base44 description of it, then try to sign up from a private window with an email you haven't invited.

How to fix: pick the strictest access option your app can live with, and set the data rules below as if anyone could sign in.

2. "Public" apps can let anyone sign up

Base44's access guide is clear: "If your app is set to Public, anyone can create an account from your register page and sign in." A Public app may not ask visitors to sign in at all. That is fine for a consumer app, but it means a rule like "signed-in users can read all invoices" lets any stranger read them after a ten-second sign-up.

How to check: list every table and ask, for each one, whether a brand-new user who signed up a minute ago should see all of it.

How to fix: tie private records to the user who owns them, and keep shared business data limited to the roles that need it.

3. "All Users" data rules

Base44 warns that "If permissions are not set up correctly, the wrong people could view or change data in your app." The widest option, "All Users", means "Anyone can perform this action, even without signing in."

How to check: open each table's permissions and look for All Users on read, update or delete. Then open your app in a private window, signed out, and try to load pages that show data.

How to fix: keep All Users only for content that is truly public, such as a product list. Use owner-only or role-based rules for everything else, and check update and delete separately from read.

4. Profile fields your rules depend on

If your rules use a field on the user's profile, such as an organization or a role, check who can edit that field. Base44's security scan describes the risk: "a user could change it to another organization's value and get that organization's access."

How to check: as a normal user, try to edit your own profile's organization or role field, then see whether you can reach another organization's records.

How to fix: make access-deciding fields read-only for users and set them from an admin screen or a backend function. Base44's scan offers a Fix All option that locks these fields so only your app's editors can change them; retest sign-up and onboarding afterwards.

5. Backend functions anyone can run

Backend functions handle payments, emails and admin actions. Base44's scan flags functions with no sign-in check with the label "Anyone can run this function." The scan also tells you something important about publishing: "It warns you, but it doesn't stop you from publishing."

How to check: run the security scan and read every finding, then call each function while signed out.

How to fix: require sign-in and check the user's role inside each function. Base44 notes the fix can break a page shown to signed-out visitors, a webhook or an external integration, so retest webhooks such as Stripe's afterwards.

6. Live data in preview, and backups only on some plans

Base44's testing guide says "Your published app always uses production data." Base44 offers a separate test database you can turn on in App settings. Until you do, I'd treat every dashboard edit as an edit to real records. Backups are limited: "Backups are available on the Elite plan and on an Enterprise plan (Business or Enterprise). Elite keeps 7 days of backups."

How to check: confirm which plan you're on and whether you have any backup or restore option, and check whether test data is set up before you try risky changes.

How to fix: export your tables before bulk edits or schema changes, use test data while building, and if your app holds data you can't lose, choose a plan with backups or keep your own regular export.

7. Code, GitHub and version history limits

On the Free plan, Base44 says "you can view your app's code but not change it", and "GitHub 2 way sync requires the Builder plan or higher." Its GitHub guide adds that "you cannot use Version History to revert to versions from before the GitHub integration."

On the Builder plan or higher you can download the app's source code as a zip, and you can export your table data. But the backend functions, data tables and sign-in run on Base44's hosted backend. You can host a frontend elsewhere that still talks to Base44, but moving the backend off Base44 would mean rebuilding it. That last part is my read of the docs.

How to check: confirm your plan, whether GitHub is connected, and that you can download the source (a Builder plan feature) and export every table.

How to fix: connect GitHub early, before there's history you care about, and keep a recent export of both the code and the data.

8. Credits that run out or expire

Many features in a Base44 app, such as AI calls, emails and image generation, use integration credits. Base44 says "There is no way to preview an integration credit cost before running an action," and that "any credits you have not used expire when they reset." A public app can spend credits every time a visitor triggers one of those features.

How to check: list which features in your app use credits, look at your usage after a day of testing, and find out what your app does when credits run out.

How to fix: put credit-using features behind sign-in, limit how often each user can trigger them, and choose a plan with room for real traffic before launch.

What to do this week

1. Open the app signed out in a private window and see what loads.
2. Remove "All Users" from every table that isn't truly public.
3. Run the security scan and fix every finding, then retest webhooks.
4. Make access-deciding profile fields read-only for users.
5. Export your data and connect GitHub before launch day.

Need a hand?

If you'd rather have someone else check it, the AI-Built App Rescue starts with a $450 Launch Check. You send read-only access, and within 3 business days you get each problem ranked by severity, with where it is and how it was confirmed, plus a fixed price for the Rescue Sprint. The $450 is credited if you go ahead, and you keep the code either way. Built with something else? See the Lovable, Bolt, Replit, Cursor and v0 checklists. Or send me a short description.