The security audit engineered for modern SaaS architectures.
Source code review and targeted testing for Next.js, Supabase, PostgreSQL, and modern web APIs. Find cross-tenant data leaks, IDOR flaws, and exposed keys before your users do, in about 5 business days.
To start · €790 max
Typical turnaround
Every finding validated
Signed by default
The 6 Most Common Vulnerabilities in SaaS Applications
Modern cloud-native SaaS platforms rely on declarative permission models and client-side data fetching that fail silently.
1. Broken Supabase RLS Policies
Tables with disabled RLS, overly broad USING (true) policies, or insecure SECURITY DEFINER functions bypassing tenant isolation.
2. IDOR & Multi-Tenant Data Leakage
An authenticated user from Tenant A accesses or deletes records belonging to Tenant B by tampering with resource IDs in API requests.
3. Exposed Service Keys in Client Bundles
Private Stripe secret keys, OpenAI API credentials, or Supabase service_role keys leaked into client bundles via NEXT_PUBLIC_ misconfigurations.
4. Unprotected Server Actions
Next.js Server Actions invoked directly over HTTP POST without validating session cookies or verifying user role boundaries.
5. Public Storage Bucket Exposures
Invoices, customer documents, or exports stored inside S3/Supabase storage buckets left publicly readable without presigned URLs.
6. Unsigned Stripe Webhook Exploits
Billing endpoints that process invoice.paid events without verifying Stripe cryptographic signatures, enabling subscription fraud.
From Onboarding to Report Delivery in 5 Days
Scope & NDA
Execution of bilateral NDA, reception of read-only access, and final scope validation.
Manual Testing
Review of critical code, cross-account isolation tests, and reproducible evidence for every demonstrated issue.
Delivery & Call
Prioritized report with remediation recommendations, a shareable summary, and a walkthrough call.
Limited retest
Once you or your developer apply the fixes, a limited retest of the fixed items is included.
Frequently Asked Questions About SaaS Audits
Why do SaaS applications have unique, high-risk security failure modes?+
In a multi-tenant SaaS architecture, all customers share the same underlying database and API infrastructure. A single misconfigured Row-Level Security (RLS) policy or a missing tenant ID validation in a Server Action (IDOR vulnerability) can expose an entire company's sensitive data to another authenticated user.
Why do automated vulnerability scanners fail to protect SaaS platforms?+
Automated scanners (like Snyk, SonarQube, or OWASP ZAP) are useful: they catch vulnerable dependencies, some risky code patterns, and known secret formats. But they don't know your product's authorization rules. They can't know that user A must never see organization B's invoices, so they don't test that isolation. That is where most serious SaaS vulnerabilities live.
How does the Validra Security Review differ from traditional enterprise pentesting?+
A traditional pentest is usually quote-based, covers a broader scope, and often runs over several weeks. The Validra Security Review makes a different trade-off: a scope focused on the 6 surfaces that most often break in modern SaaS, a price known upfront (€395 to start, €790 at most), about 5 business days, and concrete remediation recommendations. It is not an exhaustive enterprise pentest; if you need a certification or full infrastructure scope, a specialized firm is a better fit.
Can this review help us close enterprise sales and pass vendor questionnaires?+
It can help. The report includes a shareable engagement summary (tested scope, OWASP-aligned method, findings, and fix status) you can attach to vendor security questionnaires (VSAQ, CAIQ). It is an external review, independent from your team, but not a certification (like SOC 2 or ISO 27001); each customer decides what they accept as evidence.
Secure your SaaS before your users discover vulnerabilities.
Focused review under NDA, about 5 business days. €395 to start, €395 more only if the review finds relevant issues.