Bubble App Penetration Testing
In Bubble, privacy rules are the security model, and hiding an element is not a privacy rule. If a field is visible to the Data API, it is visible to anyone who asks for it, regardless of what the page shows. CREST-certified testers, fixed price from £2,270, scoped in 24 hours.
- Unlimited retesting
- No rescheduling or cancellation fees
- Fixed quote within 24 hours
“I would highly recommend EJN Labs to any organisation seeking reliable, detailed, and well-managed penetration testing services, particularly for government or enterprise-level projects.”
Imran SaghirProject Lead, SquareOne“There wasn’t another company we could find that could deliver what we needed in the timeframe we needed. The client loved it, and we got instant ROI from the engagement.”
Dan WilcocksonCo-Founder, CelloriBubble sends data to the browser and then decides what to display. That means conditional visibility, hidden groups and disabled buttons are presentation, not protection, and the underlying record is already on the client.
Why hiding an element is not security
Privacy rules are the actual control. They decide which fields of which records a user can see, and every data type needs them. A data type with no privacy rule is readable in full, including through the Data API, which many apps leave enabled without realising it is on.
Workflows are the other half. A backend workflow exposed as an API endpoint, or a frontend workflow that performs a privileged action without checking who triggered it, lets a user do something the interface never offered them.
ISO 27001, SOC 2, PCI DSS and Cyber Essentials Plus audits accept manual penetration test evidence. Scan-only evidence is generally insufficient.
PRIVACY RULES, DATA API + WORKFLOWS
What we actually pen test on a Bubble app
Manual pen testing across privacy rule coverage, Data API exposure, workflow authorisation, plugin risk and isolation between users.
Privacy rules and field exposure
Every data type checked for privacy rule coverage, which fields are exposed to which roles, and whether records are reachable in full despite the interface restricting them.
Data API and endpoint exposure
Whether the Data API is enabled and what it returns per data type, API workflow authorisation, search constraint manipulation, and what an unauthenticated request retrieves.
Workflow authorisation
Backend and frontend workflows tested for actions that run without verifying the caller, parameter manipulation, and whether a user can trigger a workflow reserved for another role.
User and tenant isolation
Authenticated as one user, whether another user’s records, uploads or messages are reachable through search, the API or a direct reference.
Plugins and third-party code
Installed plugins reviewed for what they expose, keys held in plugin configuration, whether any plugin bypasses privacy rules, and client-side plugin code.
File uploads and storage
Whether uploaded files are publicly addressable, whether private files can be reached by URL, filename predictability, and upload type validation.
METHODOLOGY
Bubble App Penetration Testing: From Scope to Attestation
CREST-aligned methodology built on OWASP Web Security Testing Guide, OWASP ASVS, NIST SP 800-115, and PTES. Each finding maps to all four standards plus your specific compliance regime.
Reconnaissance
Application mapping, technology fingerprinting, content discovery, parameter enumeration, authentication-flow analysis, role-matrix construction.
Vulnerability Assessment
Authenticated and unauthenticated automated scanning across every user role, plus targeted manual checks for known weakness patterns.
Manual Exploitation
Hands-on testing by a CREST-certified pentester. Business-logic exploitation, chained vulnerabilities, privilege escalation, impact validation.
Reporting + Retest
Executive summary, technical report with CVSS scores and reproduction steps, walkthrough call, free retest after remediation, attestation letter.
CREDENTIALS
Verified Accreditations Auditors Accept
Every credential below is independently verifiable. UK procurement teams, FCA supervisors, ISO 27001 / SOC 2 auditors, and cyber insurance underwriters all recognise these standards.
GET YOUR QUOTE
Get a CREST Bubble app pen test quote in 24 hours
A fixed-price quote back in one business day, from a named CREST assessor. No sales pipeline, no chasing.
- CREST and IASME accredited. Testing your auditors and clients already recognise.
- Fast-track testing within 24 hours where required. Free retest of every fix included.
- Live findings via your client portal, not a four-week PDF.
- Fixed price from £3,500 for a single-role, single-app scope, agreed up front. Most engagements run £5,000 and up. No day-rate surprises.
Dan WilcocksonCo-Founder, CelloriUnder NDA Further named references available on a scoping call.
- We reply within one business day with a fixed-price quote from a named CREST assessor.
- You approve the scope and we book a start date, usually within 24 hours.
- Live findings land in your client portal as we test, with a free retest of every fix.
Get your fixed pen test quote in 24 hours
Quote request received
We will reply within one business day with your fixed-price quote from a named CREST assessor.
Your data stays with us. No newsletter signup.
or book a 20-min scoping call first
We reply within one business day. Your data stays with us. No newsletter signup.
COMPLIANCE READY
Reports Mapped to Every Framework
Findings are explicitly tagged to the relevant control reference. Your audit team submits the report directly without translation work.
ISO 27001:2022
Annex A.8.8 management of technical vulnerabilities plus A.5.15-5.18 and A.8.2-8.5 access control validation.
SOC 2 Type I & II
CC6 logical access, CC7 system operations, CC8 change management evidence.
PCI DSS
Requirement 11.4 application penetration testing across cardholder data environments, including ecommerce penetration testing for online retail platforms.
FCA SYSC
SYSC 4.1.1R, 6.1.1R, 13 mapped to each finding for FCA-regulated firms.
UK GDPR
Article 32 effectiveness testing, customer-data security controls, ICO-acceptable evidence.
Cyber Essentials Plus
Direct certification through our IASME body status, single-vendor delivery.
PRICING
Transparent Bubble App Penetration Testing Pricing
Pricing depends on app complexity, user-role count, business-logic depth, and integration surface. The day count flexes; the included deliverables stay the same across all engagements.
2 to 3 testing days
Single user role, basic CRUD application, marketing website with auth. Around 5 working days from kickoff to report.
Get a fixed quote3 to 4 testing days
Multi-role SaaS, business application with payment integration. Around 8 to 12 working days from kickoff to report.
Get a fixed quote4 to 6 testing days
Multi-tenant platform, complex authorisation matrix, integration-heavy applications. Around 15 to 20 working days from kickoff to report.
Get a fixed quotePart of Technologies We Pen Test. These are examples of the stacks we publish pages for, not a complete list. If yours is not here we still test it. Related pages:
BY SECTOR
Bubble App Penetration Testing for Your Sector
Sector-specialist scoping for UK businesses with sector-specific compliance regimes and threat models.
Fintech & FCA-Regulated
FCA SYSC, Open Banking FAPI 1.0, PSD2 SCA, payment-flow scrutiny, KYC/AML testing.
Fintech sector pageSaaS Companies
SOC 2 Type I & II evidence, multi-tenant boundaries, role escalation, customer-tenant isolation.
SaaS sector pageLaw Firms
SRA Cyber Standard, privileged data, conveyancing fraud defence, partner-tier procurement.
Law firm sector pageHealthcare
NHS DTAC, DSP Toolkit v6, UK GDPR Article 32, EHR systems, telehealth platforms.
Healthcare sector pageInsurance
FCA / PRA Operational Resilience, cyber underwriting, claims data, broker portals.
Insurance sector pagePublic Sector
CCS / G-Cloud framework, NCSC-aligned, citizen-facing services, PSN-compliance scrutiny.
Public sector pageWHY EJN LABS
What You Get From Bubble App Penetration Testing
Six concrete differentiators competitors don’t all match.
CREST-Certified Testers, Verifiable
Every test by a CREST-certified pen tester (CRT, CCT APP, CCT INF where applicable). Verify our company status at crest-approved.org.
24-Hour Startup, Where Required
From signed scope to active testing in a single business day for incident response, audit deadlines, or regulator-driven timelines.
Live Findings, Not 4-Week PDFs
Critical issues reported during testing through your client portal. Your team remediates while testing continues.
Audit-Ready Reports
Executive summary plus full technical report with CVSS scores and explicit framework mappings (ISO 27001, SOC 2, PCI DSS, FCA SYSC).
Free Retests, Standard
Verify remediation of every finding before close-out. Letter of attestation for audit submission included. Most competitors charge £1,500-£3,000 per retest.
UK-Based CREST Testers
Every engagement performed by vetted, UK-based CREST-certified testers, matched to your needs, security clearance, and compliance scope.
FAQ
Frequently Asked
Is a Bubble app really testable?
Yes, and it needs to be. Because the platform sends data to the browser and filters it there, a Bubble app misconfigured on privacy rules leaks more readily than conventionally coded software, not less.
Do you need editor access?
Read access to the data types and privacy rules makes the test much more systematic, because we can check every type rather than the ones we stumble on. We also want two user accounts to test isolation.
Will you slow down or break the app?
No. We avoid high-volume and destructive testing, work against a development version where you have one, and agree anything with a risk of disruption first.
Our customers are enterprises. Will this satisfy them?
It is written for exactly that. A report from a named CREST-certified assessor, findings mapped to ISO 27001 and SOC 2 where relevant, and a retest once you have fixed things.
What does it cost?
From £2,270 for a single app with standard roles, fixed before we start. More roles, payments or a large data model move it up and we tell you the figure before you commit.
20+ CREST-accredited testing services in one place
Web, mobile, API, cloud, AI, infrastructure, red team. Pick the test that fits your environment.
Get a fixed price for your Bubble app
Tell us what the app does, roughly how many data types and roles, and who is asking for evidence. Fixed-price quote from a named CREST assessor within one business day.
