Web Application Penetration Testing

Web application penetration testing is a hands-on security assessment in which our testers attack your web application the way a real adversary would. We go beyond automated scanners to uncover the flaws that lead to data breaches, account takeover and fraud, and we show you exactly how to fix them.

What We Test

• Authentication and session management: login, MFA, password reset, session handling and SSO flows.
• Access control: IDOR, privilege escalation and horizontal/vertical authorisation bypasses.
• Injection flaws: SQL, NoSQL, command, template and other server-side injection.
• Client-side issues: XSS, CSRF, clickjacking, CORS and insecure browser storage.
• Business logic: payment, checkout, workflow and rate-limit abuse that scanners cannot detect.
• Server and configuration: SSRF, file upload, security headers, TLS and exposed admin panels.

Our Approach

Every engagement follows the OWASP Web Security Testing Guide and the OWASP Top 10. We start with scoping and threat profiling, map the application, then combine targeted automated checks with in-depth manual testing. Both authenticated (per user role) and unauthenticated testing are included so we can measure what each type of user can really reach.

What You Get

• An executive summary written for leadership and investors.
• Detailed technical findings with severity (CVSS), proof of concept, impact and step-by-step remediation.
• A remediation call with your developers.
• A free retest of fixed issues and an updated report showing closure.

Why Offensium Vault

• Manual-first testing by experienced security researchers, not just scanner output.
• ISO 27001 and ISO 9001 certified processes with strict confidentiality.
• Clear, developer-friendly reports that your team can act on immediately.

Need wider coverage? Combine this with API security testing, mobile app penetration testing or a full VAPT engagement. You can also review our web application penetration testing checklist.

Frequently Asked Questions

How long does a web application penetration test take?

Most web applications take between one and three weeks depending on size, number of user roles and complexity. We confirm the timeline during scoping.

Will testing affect our live application?

We agree the rules of engagement in advance and can test against a staging environment. When production testing is required, we avoid destructive actions and coordinate timing with your team.

Do you provide a retest?

Yes. Once your team has fixed the findings, we retest them and issue an updated report.

Get a Quote

Tell us about your environment and timelines and we will send a clear, fixed-scope proposal. Contact Offensium Vault or book a free call with our team.