Web Application Penetration Testing
Manual testing of the application your customers actually use.
Modern web applications concentrate risk in a small number of places: who can log in, what they are allowed to see, and how the application handles the data it is given. Automated scanners cover the surface. Authorization boundaries, tenant separation and business-logic flaws still require a person who understands how the application is supposed to work.
CyberZ performs manual web application penetration testing against explicitly authorized targets, following the OWASP Web Security Testing Guide and using the OWASP Application Security Verification Standard as a reference for coverage. The exact test cases are adapted to the agreed scope.
Ideal for
- B2B SaaS platforms with multi-tenant data
- Applications preparing for or maintaining SOC 2
- Products facing enterprise security questionnaires
- Teams shipping frequently that need release validation
Testing may include, depending on the agreed scope:
Depending on the agreed scope, testing may include the areas below. Scope, test accounts, environments and exclusions are defined before testing starts and recorded in the Rules of Engagement.
Identity & session
- Authentication flows and credential handling
- Session management and token lifecycle
- Password reset and account recovery
- Multi-factor authentication (MFA) implementation
- OAuth / OIDC integrations
- JWT issuance, validation and storage
Authorization & access control
- Horizontal and vertical access control
- Insecure direct object references (IDOR)
- Broken object level authorization (BOLA)
- Privilege escalation between roles
- Multi-tenancy and tenant isolation
- Function-level and feature-flag authorization
Business logic
- Workflow and state-machine abuse
- Pricing, quota and entitlement manipulation
- Race conditions in sensitive operations
- Rate limiting and abuse controls
Input handling
- Injection (SQL, NoSQL, command, template)
- Cross-site scripting (XSS)
- Cross-site request forgery (CSRF)
- Server-side request forgery (SSRF)
- File upload handling
- Path traversal
- Input validation and canonicalization
Platform & configuration
- Security headers and cookie attributes
- CORS configuration
- Error handling and information disclosure
- Sensitive data exposure
- API interactions used by the front end
How we work on this engagement.
Authenticated, role-aware testing
We test with the roles your customers use — admin, member, read-only, cross-tenant — and try to move between them. Most impactful findings in SaaS applications are authorization flaws, not missing patches.
Manual first, tools second
Scanners are used to enumerate and to cover known vulnerability classes. Findings are validated by hand and business-logic testing is entirely manual.
Evidence for every finding
Each finding includes the affected asset, reproduction steps, evidence, technical and business impact, CVSS score and remediation guidance your engineers can act on.
What you receive.
Security assessments represent a point-in-time evaluation and do not constitute a guarantee that the assessed systems remain secure or free from vulnerabilities after the assessment.
- 01Executive summary for security and compliance stakeholders
- 02Technical report with prioritized findings
- 03Severity ratings with CVSS scores
- 04Reproduction steps and evidence
- 05Remediation guidance
- 06Retest of remediated findings and retest results
- 07CyberZ Penetration Testing Certificate on request
Do you test production or staging?
Either, as agreed in scope. Many customers prefer a staging environment that mirrors production; others authorize production testing with defined exclusions and a testing window.
How long does a web application test take?
It depends on the size of the application, number of roles and depth requested. Scope is defined during pre-engagement and the timeline is agreed before testing begins.
Can the report be shared with customers or auditors?
Yes. The report is yours. Many customers share the executive summary or a letter of attestation with enterprise buyers or include it as evidence in a compliance program.
Request a security assessment.
Tell us what you need tested, when, and which evidence you need at the end. We reply with scoping questions, not a sales deck.