Bubble SaaS Security Audit
Privacy rule audit, tenant isolation testing, API endpoint validation, webhook security, and workflow guard verification — the complete quarterly security audit for every Bubble SaaS. Run it before launch and every time a major feature ships.
One Security Gap Can End Your SaaS Before It Starts
A data breach at a SaaS company with paying customers is not just a technical problem — it is a business-ending event. Customer data exposed, regulatory fines levied, trust destroyed in an industry that runs entirely on trust. Every Bubble SaaS has a small number of predictable security vulnerabilities, all architectural in nature, all fixable in a day. This is the complete security audit you should run before launching and quarterly thereafter.
Audit 1 — Privacy Rules (Most Critical)
Open your Bubble app’s Data tab. Click Privacy. For every single data type in the list, confirm: (1) at least one rule exists, (2) no rule grants “Everyone” access to sensitive fields, (3) the condition correctly scopes access to the workspace or the record owner.
CORRECT pattern for workspace-scoped types:
Condition: Search for Memberships[user=Current User,
workspace=This Record’s workspace, status=Active]:count > 0
Permissions: Find ✓ View ✓
// WARNING SIGNS in your privacy rules:
✗ “Everyone” on any field of any data type
✗ No rule at all on any data type (defaults to Everyone)
✗ Condition missing workspace scope (only checks Current User, not workspace)
✗ Edit permission broader than view permission
Test: Two-Browser Tenant Isolation Test
Setup:
Browser A: User_A logged into Workspace_A (create 5 test records)
Browser B: User_B logged into Workspace_B (different account)
Test each data type:
In Browser B: search/navigate to every page showing records
PASS: zero records from Workspace_A appear in Browser B
FAIL: any Workspace_A record visible in Browser B
Test direct URL access:
Copy URL of a Workspace_A record detail page from Browser A
Paste into Browser B and navigate
PASS: page shows empty/error state
FAIL: page shows Workspace_A record data to User_B
Audit 2 — API Endpoints and Webhooks
-
✓
Every exposed API Workflow endpoint validates the caller identity in Step 1 before any data access or modification
-
✓
Stripe webhook signature validated before any webhook processing (use Toolbox JS to verify Stripe-Signature header)
-
✓
Bubble’s Data API is either disabled or has explicit field-level access controls set for each exposed data type
-
✓
No sensitive data (API keys, passwords, tokens) stored in data fields visible in the API response
-
✗
Never use URL parameters to authenticate users — always check Current User server-side
-
✗
Never trust client-submitted data for pricing, permissions, or access control — always read from the database
Audit 3 — Sensitive Workflow Guards
| Workflow Type | Required Guard | Consequence if Missing |
|---|---|---|
| Delete any record | Role check: Admin+ OR record owner | Any user can delete any record via direct API call |
| Change member role | Role check: Admin+ only, cannot elevate above own role | Members can promote themselves to Owner |
| Access billing/stripe actions | Role check: Owner only | Members can trigger subscription changes |
| Create records with workspace set | Workspace must match Current User’s current_workspace | Data injection across workspace boundaries |
| Send invitation | Seat limit check + role check (Admin+) | Members bypass seat limits and plan restrictions |
| Export or download data | Role check + workspace scope on search | Users export other workspaces’ data |
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