T-01
Authentication Security
Assess login mechanisms, password reset workflows, account recovery, multi-factor authentication, and authentication bypass vulnerabilities.
Services · Web Application VAPT
Web Application Penetration Testing
Your Application Could Be Vulnerable. Find Out Before Attackers Do.
At Bugquell, we go beyond automated scans with expert-led, manual penetration testing to uncover critical vulnerabilities, broken access controls, authentication weaknesses, and business logic flaws that could compromise your web applications and sensitive data.
Overview
What Is Web Application VAPT?
VA
Vulnerability Assessment
Identifies potential security weaknesses.
PT
Penetration Testing
Safely validates whether they can be exploited and assesses their impact.
Methodology informed by
OWASP Web Security Testing GuideOWASP Top 10Manual-first testing
Web Application Vulnerability Assessment and Penetration Testing (VAPT) is a structured security assessment designed to identify, validate, and evaluate security weaknesses in web applications before malicious attackers can exploit them.
Modern web applications handle sensitive customer information, financial transactions, authentication processes, and business-critical operations. A single security weakness can expose confidential data, allow unauthorized access, or compromise important application functionality.
Bugquell combines security research, manual testing, and controlled exploitation to identify vulnerabilities that conventional automated scanning tools may overlook.
Our assessments focus on understanding how your application actually works, including user roles, permissions, workflows, and interactions between different features.
Coverage
What We Test
T-02
Authorization & Access Control
Identify broken access controls, insecure direct object references (IDOR), horizontal and vertical privilege escalation, and unauthorized access to restricted functionality.
T-03
Business Logic Vulnerabilities
Examine application workflows to identify opportunities for manipulating transactions, bypassing business rules, abusing discounts, or performing unauthorized operations.
T-04
Session Management
Evaluate session tokens, cookie security, session expiration, logout functionality, session fixation, and session invalidation.
T-05
Injection Vulnerabilities
Test for SQL injection, NoSQL injection, command injection, server-side template injection, and other injection vulnerabilities where applicable.
T-06
Cross-Site Scripting (XSS)
Identify reflected, stored, and DOM-based XSS vulnerabilities that could allow attackers to execute malicious JavaScript in users' browsers.
T-07
File Upload Security
Evaluate file validation, upload restrictions, file handling, and potential unauthorized file access or server-side execution risks.
T-08
Server-Side Request Forgery (SSRF)
Assess whether application functionality can be abused to initiate unauthorized server-side requests to internal or external resources.
T-09
Sensitive Data Exposure
Identify weaknesses that could expose confidential information, credentials, API keys, personal data, or internal application details.
T-10
Security Misconfiguration
Review application-level security headers, error handling, exposed debugging functionality, unsafe configurations, and unnecessary information disclosure.
T-11
Cross-Site Request Forgery (CSRF)
Evaluate whether sensitive application actions are adequately protected against unauthorized cross-origin requests.
T-12
Multi-Tenant Security
Test whether users from one organization or tenant can access or manipulate information belonging to another organization.
Threats
Common Web Application Vulnerabilities
Vulnerability testing is adapted to your application's architecture, functionality, and the agreed assessment scope.
01Broken Access Control and IDOR
Users can reach records or functions that belong to someone else by changing an ID or request.
Impact · Exposure of customer data and unauthorized changes to records.
02Privilege Escalation
A regular user gains the permissions of a higher role, such as an administrator.
Impact · Full control over application settings, users and data.
03Authentication Bypass
Weak login, reset or MFA logic lets an attacker sign in without valid credentials.
Impact · Account takeover and access to protected areas.
04SQL Injection
Untrusted input is executed as part of a database query.
Impact · Reading, altering or deleting data stored in the database.
05Cross-Site Scripting
Attacker-supplied scripts run in other users' browsers.
Impact · Session theft, fraudulent actions and defacement.
06Business Logic Flaws
Workflows can be used in ways the application was not designed to allow.
Impact · Financial loss, abuse of offers and bypassed business rules.
07Server-Side Request Forgery
The server can be made to send requests to internal or external systems.
Impact · Access to internal services and cloud metadata.
08Insecure File Uploads
Uploaded files are not properly validated, stored or served.
Impact · Malware hosting, data access or server-side code execution.
09Session Management Weaknesses
Session tokens can be predicted, reused or remain valid too long.
Impact · Hijacked user sessions and persistent unauthorized access.
10Sensitive Information Disclosure
The application reveals secrets, personal data or internal details.
Impact · Leaked credentials and information that helps further attacks.
Methodology
Our Web Application Penetration Testing Methodology
STEP 1
Scope & Security Requirements
We begin by understanding the application's architecture, functionality, user roles, and business requirements. Testing boundaries, authorized environments, and rules of engagement are established before testing begins.
STEP 2
Reconnaissance & Attack Surface Mapping
Our security researchers explore the application to identify accessible functionality, endpoints, authentication flows, user roles, and potential attack surfaces.
STEP 3
Manual Security Testing
We perform in-depth manual testing across authentication, authorization, session management, input validation, business logic, and other relevant security controls.
Particular attention is given to vulnerabilities that require understanding how application features and permissions interact.
STEP 4
Vulnerability Validation
Potential vulnerabilities are manually validated through controlled testing to determine exploitability, affected functionality, and realistic business impact.
Where appropriate, we investigate whether multiple security weaknesses can be chained to demonstrate a greater security impact.
STEP 5
Security Reporting
We provide a comprehensive report documenting validated vulnerabilities, severity ratings, reproduction steps, supporting evidence, business impact, and recommended remediation measures.
STEP 6
Remediation Support & Retesting
We provide clarification on reported findings and perform retesting where included in the engagement to verify whether identified vulnerabilities have been successfully remediated.
Deliverables
What You Receive
D-01
Executive Summary
A business-friendly overview of the assessment, key security risks, and recommended priorities.
D-02
Detailed Technical Report
A comprehensive report documenting validated vulnerabilities and affected application functionality.
D-03
Proof-of-Concept Evidence
Clear reproduction steps, relevant HTTP requests and responses, and supporting screenshots where appropriate.
D-04
Risk & Severity Assessment
Severity classifications and risk context to help your team prioritize remediation.
D-05
Remediation Recommendations
Practical, actionable guidance to help developers understand and address security weaknesses.
D-06
Retesting Results
Verification of remediation effectiveness where retesting is included in the agreed engagement.
Why us
Why Choose Bugquell?
W-01
Manual-First Security Testing
We prioritize hands-on security testing and investigate vulnerabilities that automated tools may not reliably detect.
W-02
Research-Driven Approach
Our security researchers examine application behavior, trust boundaries, user permissions, and complex workflows to identify meaningful security weaknesses.
W-03
Expertise in Authorization & Business Logic
We focus on identifying IDOR, privilege escalation, authentication weaknesses, and business logic vulnerabilities that can expose sensitive data or enable unauthorized actions.
W-04
Clear & Actionable Reporting
Our reports are structured so that both technical and non-technical stakeholders can understand identified risks, their impact, and the recommended fixes.
W-05
ISO/IEC 27001:2022 Certified
Bugquell operates an ISO/IEC 27001:2022-certified information security management system within its certified scope.
Ready to scope your application?
Request a Security Assessment →FAQ
Frequently Asked Questions
Q01What is the difference between vulnerability assessment and penetration testing?+
A vulnerability assessment identifies potential security weaknesses, while penetration testing goes further by safely validating whether those weaknesses can be exploited and assessing their potential impact.
Q02How long does a web application penetration test take?+
The duration depends on the application's complexity, number of features, user roles, and agreed testing scope. A timeline is provided after the initial scope review.
Q03Will penetration testing affect our live application?+
Testing is performed under agreed rules of engagement, with precautions to minimize operational disruption. Where appropriate, sensitive or potentially disruptive tests are conducted in a staging environment.
Q04Do you perform manual or automated penetration testing?+
Bugquell follows a manual-first approach. Tools support reconnaissance and analysis, while our security researchers investigate application behavior, validate vulnerabilities, and assess their impact.
Q05Do you test applications with multiple user roles?+
Yes. We assess authorization boundaries between different user roles and tenants, including potential horizontal and vertical privilege escalation vulnerabilities.
Q06What happens after vulnerabilities are identified?+
We provide detailed findings with supporting evidence, severity ratings, business impact, and remediation recommendations. Retesting can verify the effectiveness of implemented fixes.
Q07Which security standards do you follow?+
Our web application testing methodology is informed by the OWASP Web Security Testing Guide, OWASP Top 10, and relevant penetration testing practices.
Attack surface: unknown
Don't Wait for an Attacker to Find Your Next Vulnerability.
Protect your applications, customer data, and business operations with expert-led web application penetration testing from Bugquell. Identify hidden security weaknesses and take action before they become serious threats.