# Web Application Security

> Master advanced web app vulnerabilities. Learn to exploit authentication flaws, file uploads, SSRF, XXE, insecure deserialization, and APIs.

Canonical: https://codelivly.com/learning-paths/web-application-security
Last updated: 2026-07-27

| | |
|---|---|
| Level | Intermediate |
| Category | Cybersecurity |
| Rooms | 6 |
| Lessons | 28 |
| Estimated time | 8 h 10 min |

A comprehensive learning path covering the most critical web application vulnerabilities beyond basic injection. Progress from exploiting authentication and session management flaws to executing complex attacks like SSRF, XXE, and insecure deserialization. Conclude with modern API security testing and broken object-level authorization. Designed for cybersecurity professionals aiming to master advanced OWASP web exploitation and secure enterprise applications.

## Rooms in this path

1. [Authentication & Session Management Flaws](https://codelivly.com/rooms/authentication-session-management-flaws) - Master web authentication and session management vulnerabilities.
2. [File Upload Vulnerabilities](https://codelivly.com/rooms/file-upload-vulnerabilities) - Master file upload vulnerabilities. Learn to bypass client-side validation, extension filters, and magic bytes to…
3. [SSRF (Server-Side Request Forgery)](https://codelivly.com/rooms/ssrf) - Master Server-Side Request Forgery (SSRF). Learn to exploit URL parameters, access internal services, dump cloud…
4. [XML External Entity (XXE) Injection](https://codelivly.com/rooms/xml-external-entity-xxe-injection) - Master XXE injection attacks, from basic local file reading to blind out-of-band exfiltration and SSRF chaining.
5. [Insecure Deserialization](https://codelivly.com/rooms/insecure-deserialization) - Exploit insecure deserialization across PHP, Java, Python, and .NET to achieve remote code execution using gadget…
6. [API Security Testing Basics](https://codelivly.com/rooms/api-security-testing-basics) - Master REST API penetration testing. Discover hidden endpoints, exploit BOLA and Mass Assignment, and bypass API rate…

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