Web Application Penetration Testing and Website VAPT
Our web application penetration testing finds the vulnerabilities that scanners miss: broken access control, business logic flaws, authentication weaknesses and injection issues. Testing follows the OWASP Top 10 and OWASP Testing Guide and is carried out manually by senior testers. You get a CVSS-rated report, remediation guidance and a free retest.
Last reviewed 2026-09-28 by the Scantra Security testing team
Why web apps need manual security testing
Your web application is usually the most exposed part of your business. It handles logins, payments and personal data, and it changes every sprint. Automated website security testing tools catch outdated libraries and obvious misconfigurations, but most serious breaches come from logic: a user who can read another customer's data by changing a number in the URL, or a discount that can be applied twice.
A manual web app VAPT puts an experienced attacker in front of your application with the same access your users have, and asks what they could do with it.
OWASP Top 10 coverage
- A01 Broken access control, including IDOR and privilege escalation
- A02 Cryptographic failures and sensitive data exposure
- A03 Injection, including SQL, NoSQL, command and template injection
- A04 Insecure design and business logic abuse
- A05 Security misconfiguration and exposed admin interfaces
- A06 Vulnerable and outdated components
- A07 Identification and authentication failures
- A08 Software and data integrity failures
- A09 Security logging and monitoring gaps
- A10 Server-side request forgery (SSRF)
Beyond the OWASP Top 10
We also test multi-tenant isolation, session management, file upload handling, payment and checkout flows, rate limiting, account recovery, single sign-on and OAuth integrations, and client-side issues such as cross-site scripting and clickjacking. Where your app relies on APIs, we test those endpoints directly as well as through the interface.
How a web application pentest works
1. Scoping and rules of engagement
We agree on targets, environments, test accounts, testing windows and escalation contacts. You get a written scope and a fixed quote before any testing starts.
2. Reconnaissance and threat modelling
We map the attack surface, user roles, data flows and third-party integrations so testing focuses on what an attacker would actually go after.
3. Automated discovery
Scanners help us cover known vulnerabilities and misconfigurations quickly. Their output is a starting point, never the final report.
4. Manual exploitation
Senior testers chain issues together, test business logic, abuse authorisation boundaries and prove real impact with safe proof-of-concept exploits.
5. Reporting
Every finding comes with a CVSS rating, affected assets, reproduction steps, evidence and clear remediation guidance written for developers.
6. Free retest
Once your team has fixed the issues, we retest them at no extra cost and issue an updated report showing what was closed.
What you need to provide
- The application URL and a staging environment if available
- Test accounts for each user role
- Any API documentation or Postman collections
- A point of contact for questions during testing
Timelines and pricing factors
Most web application penetration tests take five to ten working days of testing, depending on the number of pages, roles and features. Pricing is based on that scope. We send a fixed quote after a short scoping call, and you can read more on our penetration testing cost page.
Frequently asked questions
What is website VAPT?
Website VAPT combines a vulnerability assessment of your site with manual penetration testing to confirm which issues are exploitable and how serious they are.
Do you test single page apps built on React, Angular or Vue?
Yes. We test modern front ends and the APIs behind them.
Can you test in production?
We prefer staging, but can test production with agreed safe techniques and testing windows.
Will the report help with SOC 2 or ISO 27001?
Yes. Reports include compliance mapping and are accepted as audit evidence.
Is a retest included?
Yes, a free retest is included after your team fixes the findings.