Penetration-Testing

Comprehensive XSS Guide 🆕 Updated September 12, 2026 — added the Django admin URLField stored XSS (CVE-2026-15920) and how copy-pasting an adjacent safe branch dropped the scheme check. A practitioner’s reference for Cross-Site Scripting — attack surface, context-aware payloads, filter/WAF/CSP bypass techniques, framework-specific vulnerabilities, real-world chains, and detection/prevention. Table of Contents Fundamentals Attack Surface & Entry Points Context-Aware Payloads Filter Bypass Techniques WAF Bypasses CSP Bypass Techniques Mutation XSS (mXSS) DOM Clobbering & Prototype Pollution Framework-Specific XSS AngularJS Sandbox Escapes postMessage & DOM XSS SVG, PDF & File Upload XSS Blind XSS Weaponized XSS Payloads Polyglots Real-World Exploitation Chains Tools & Automation Detection & Prevention Payload Quick Reference CVE Reference 1. Fundamentals XSS occurs when attacker-controlled input is rendered in a victim’s browser as executable code (JavaScript, or markup that leads to JavaScript execution). The victim’s browser runs the injected code with the origin’s privileges — same-origin access to cookies, DOM, API tokens, and session state. ...

Comprehensive SSRF Guide 🆕 Updated September 12, 2026 — added the SonicWall SMA1000 chain (CVE-2026-15409), the CVSS 10.0 SSRF that got mass-exploited into DCSync two days after the PoC dropped. A practitioner’s reference for Server-Side Request Forgery — attack surface, exploitation techniques, bypass methods, real-world chains, and detection/prevention. 🎯 Play the bypass game: Try these bypasses hands-on in the SSRF Target Simulator — reach the cloud metadata endpoint past a filter using decimal/hex IPs, IPv6, and DNS rebinding. 100% simulated, no real requests. ...

Complete Security Testing Methodology Hub The full security testing lifecycle, from reconnaissance through fuzzing to reporting. 🔍 Reconnaissance & Intelligence Gathering Open Source Intelligence (OSINT) Comprehensive OSINT Guide AI-assisted intelligence gathering, blockchain analysis Enhanced social media techniques, modern automation TikTok intelligence, emerging platform analysis Reconnaissance Guide Cloud-native techniques, container/serverless discovery Modern API reconnaissance, automated attack surface mapping ML-powered automation, continuous monitoring Advanced Intelligence Collection Attack surface discovery with modern cloud infrastructure Subdomain enumeration with 2026 techniques Content discovery and hidden endpoint identification JavaScript mining and client-side analysis Cloud asset hunting across AWS/GCP/Azure 🧪 Security Testing Tools & Techniques Professional Testing Tools Comprehensive Burp Suite Guide Enterprise DAST features, modern extensions (BurpAPISecuritySuite) Advanced BChecks/Bambdas, CI/CD integration Burp AI capabilities, professional workflows Automated Testing & Fuzzing Fuzzing Guide - AI-augmented techniques JVM fuzzing via Jazzer, Kotlin coroutine testing Advanced coverage methods, modern language support Web, binary, kernel, API, and smart-contract targets Mobile Application Testing Mobile Security Guide 2026 mobile threat intelligence, LANDFALL spyware analysis WebKit CVEs, iOS/Android security assessment Modern testing methodology, defensive controls 🎯 Specialized Testing Methodologies Bug Bounty & Vulnerability Research Bug Bounty Hunting Guide - AI-augmented methodology 2026 platform analysis, advanced reconnaissance pipelines Emerging vulnerability classes (SAML, WebAuthn, WASM) Automated chaining, data-driven career strategy Modern Security Challenges AI/LLM Security Testing AI system attack surface, prompt injection testing Jailbreak techniques, agentic system exploitation Layered detection and prevention strategies Supply Chain & Infrastructure Supply Chain Security CI/CD security testing, dependency scanning Package registry attack testing, SBOM validation Artifact provenance verification 🎓 Security Testing Learning Paths Beginner → Professional → Advanced Foundation Path: OSINT → Reconnaissance → Bug Bounty ...

Comprehensive SQL Injection Guide 🆕 Updated September 12, 2026 — added the LangGraph checkpointer chain (CVE-2025-67644 → CVE-2026-28277): SQL injection through an AI agent state store into msgpack deserialization RCE. A practitioner’s reference for SQL Injection — attack classes, exploitation techniques, database-specific payloads, WAF bypass methods, ORM/NoSQL variants, real-world CVEs, and detection/prevention. Table of Contents Fundamentals Attack Classes Entry Points & Injection Contexts DBMS Fingerprinting Authentication Bypass Union-Based Injection Error-Based Injection Boolean Blind Injection Time-Based Blind Injection Out-of-Band (OOB) Injection Second-Order SQL Injection Stacked Queries & Polyglots WAF Bypass Techniques Database-Specific Payloads ORM Injection NoSQL Injection SQLi to RCE Header, Cookie & JSON-Body Injection Constraint-Based Attacks Real-World CVEs Tools & Automation Detection & Prevention Payload Quick Reference 1. Fundamentals SQL Injection (SQLi) occurs when an attacker can influence the SQL statements that an application sends to its database. The vulnerability arises from the unsafe concatenation of untrusted input into a query string, allowing the attacker to break out of the intended data context and execute attacker-controlled SQL. SQLi has sat in the OWASP Top Ten since its inception and remains one of the highest-impact classes of web vulnerability despite decades of awareness. ...

Comprehensive CSRF Guide 🆕 Updated September 12, 2026 — added the NASA AIT-GUI command-bus CSRF chain and a reminder that simple content types skip preflight entirely. A practitioner’s reference for Cross-Site Request Forgery — attack surface, exploitation techniques, SameSite and token bypasses, real-world chains, and detection/prevention. Table of Contents Fundamentals Attack Surface & Preconditions Attack Delivery Techniques Content-Type & JSON CSRF SameSite Cookie Model SameSite Bypass Techniques CSRF Token Bypasses Referer / Origin Check Bypasses Method Override & Verb Tampering Login & Logout CSRF CORS Misconfiguration Chains Clickjacking Overlap Real-World Cases & CVEs Exploitation Chains Tools & Automation Detection & Testing Methodology Prevention & Defense in Depth Payload Quick Reference 1. Fundamentals Cross-Site Request Forgery (CSRF / XSRF / “sea-surf”) is an attack that tricks an authenticated user’s browser into submitting a state-changing request to a target application. The victim’s browser automatically attaches ambient credentials — cookies, HTTP Basic auth, client certificates, Kerberos tickets, IP-based authorization — so the target application cannot distinguish a forged request from a legitimate one. ...

Comprehensive IDOR Guide 🆕 Updated September 12, 2026 — added the Frappe/ERPNext Document Follow chain (CVE-2026-66000/66058/66059) and why subscribe-style features create standing grants nobody re-checks. A practitioner’s reference for Insecure Direct Object Reference (IDOR) and Broken Object Level Authorization (BOLA) — attack surface, enumeration patterns, bypass techniques, real-world writeups, detection workflow, and prevention. Table of Contents Fundamentals IDOR vs BOLA vs BFLA Attack Surface & Where Identifiers Live Horizontal vs Vertical Access Identifier Enumeration Patterns Parameter Tampering Techniques HTTP Method & Verb Tampering Content-Type & Format Bypasses Path, Version, and Endpoint Tricks Mass Assignment Overlap UUID & Unpredictable ID Defeats Second-Order and Blind IDOR GraphQL, WebSocket, and Non-REST Surfaces Real-World Writeups & CVEs Exploit Chains Detection Methodology with Autorize Tools & Automation Impact & Severity Mapping Prevention & Secure Design Testing Checklist Report Writing 1. Fundamentals IDOR occurs when an application uses user-supplied input to reference an internal object (database row, file, resource) and fails to verify whether the current user is authorized to access that specific object. The application trusts the identifier, not the identity. ...

Comprehensive RCE Guide 🆕 Updated September 12, 2026 — added the SharePoint BDC chain (CVE-2026-63520 + CVE-2026-55040), including why the two public gadget chains break signature-based detection. A practitioner’s reference for Remote Code Execution — vulnerability classes, exploitation primitives, language-specific chains, real-world CVEs, and detection/prevention. 🔥 Latest Update: May 2, 2026 - Enhanced with 2026 critical CVEs including CVE-2025-53652 (Jenkins), CVE-2026-32191 (Microsoft Bing), CVE-2026-34197 (ActiveMQ), and modern command injection + expression language techniques. ...

Comprehensive XXE Guide 🆕 Updated September 12, 2026 — added the GeoNetwork pre-auth RCE chain (CVE-2026-63219 → CVE-2026-58400) and why XSLT processor configuration is a security boundary. A practitioner’s reference for XML External Entity injection — fundamentals, parser quirks, in-band and out-of-band exfiltration, parameter entity chains, file-format vectors, real-world CVEs, tooling, and hardening. Table of Contents Fundamentals Attack Surface & Entry Points Classic In-Band XXE Blind XXE via External DTD Error-Based XXE Parameter Entities & Local DTD Chains XXE → SSRF Pivoting XXE → File Read & Information Disclosure XXE → RCE Parser-Specific Behaviors XML File-Format Vectors WAF & Filter Bypasses Denial of Service Real-World CVEs & Chains Tooling Detection & Prevention Payload Quick Reference 1. Fundamentals XXE (XML External Entity) injection occurs when an XML parser processes attacker-controlled input with DTD (Document Type Definition) and external entity resolution enabled. The parser treats SYSTEM identifiers as URIs, fetching and substituting their content into the document — yielding file read, SSRF, blind exfiltration, DoS, and in some stacks RCE. ...

Comprehensive Insecure Deserialization Guide 🆕 Updated September 12, 2026 — added the Telerik UI padding-oracle chain (CVE-2026-13181/13182/13183): no MAC, a JSON decoder at the end, and why the key source is always the first question. A practitioner’s reference for insecure deserialization — language-specific attack surface, gadget chain mechanics, real-world CVE chains, tools, and detection/prevention. 🧩 See it visually: Explore gadget chains and disassemble serialized blobs in the Deserialization Gadget Visualizer — trace readObject() → Runtime.exec and read Java/pickle/PHP streams byte by byte, 100% in your browser. ...

Comprehensive GraphQL Security Guide 🆕 Updated September 12, 2026 — added an airline GraphQL BOLA case study: sequential IDs, resolver-level authorization gaps, and why introspection removes the grace period. A practitioner’s reference for attacking and defending GraphQL APIs — discovery, introspection, schema recovery, injection, authorization flaws, batching, DoS, subscriptions, CSRF/CSWSH, engine-specific quirks, and detection/prevention. Table of Contents Fundamentals Discovery & Fingerprinting Introspection Schema Recovery Without Introspection Query & Data Extraction Mutations & Mass Assignment Authorization Flaws (BOLA / BFLA / IDOR) Injection Through GraphQL Batching Attacks & Aliases Denial of Service CSRF & CSWSH Subscriptions & WebSockets Engine-Specific Notes (Apollo, Hasura, graphql-java, async-graphql, Mercurius) Notable CVEs & Real-World Chains Tooling Detection & Prevention Payload Quick Reference 1. Fundamentals GraphQL is a query language and server runtime for APIs, originally developed at Facebook and open-sourced in 2015. Instead of the multiple fixed endpoints of a REST API, a GraphQL service exposes a single endpoint that accepts typed queries and returns exactly the fields the client asks for. ...

Comprehensive API Security Guide 🆕 Updated September 12, 2026 — added the Flowise case study: AI workflow APIs that execute user code by design, and why insufficient patches deserve a re-test. A practitioner’s reference for API security — attack surface, OWASP API Top 10 exploitation, authentication and authorization bypasses, GraphQL-specific attacks, rate limit evasion, API gateway hardening, open banking compliance, AI/MCP risks, real-world chains, and detection/prevention. Table of Contents Fundamentals API Styles: REST vs GraphQL vs gRPC vs SOAP API Recon & Attack Surface Discovery OWASP API Security Top 10 (2023) OWASP Web Top 10 (2025) — API Implications BOLA / IDOR Deep Dive Broken Authentication & Token Attacks BOPLA: Mass Assignment & Excessive Data Exposure Broken Function Level Authorization (BFLA) Unrestricted Resource Consumption & Rate Limit Bypasses Business Flow Abuse SSRF in APIs Security Misconfiguration & Improper Inventory API Gateway Security Unsafe Consumption of Third-Party APIs GraphQL-Specific Attacks JWT & OAuth 2.0 Exploitation Injection in APIs HTTP Request Smuggling in API Gateways API Key & Secret Leak Detection AI, MCP & Agentic API Risks Open Banking & E-Commerce API Security Real-World CVEs & Breach Chains Tools & Automation Detection & Prevention Testing Checklist 1. Fundamentals APIs now account for ~83% of web traffic and over 71% of all web requests. The average cost of an API breach is $4.88M (T-Mobile 2023, 37M users affected). API attacks increased 10-13x in 2025 (Indusface), 57% of organizations experienced at least one API-related data breach in the past two years (Traceable AI), and 97% of API vulnerabilities can be exploited with a single request (Wallarm 2026). Unlike traditional web apps, APIs expose more endpoints, lack a constraining UI, and are often protected by weaker compensating controls because developers assume machine-to-machine trust. ...

Comprehensive Authorization & Access Control Guide 🆕 Updated September 12, 2026 — added the SolarWinds Web Help Desk SAML bypass (CVE-2026-28323): when parameter presence selects the auth path, the attacker picks it. A practitioner’s reference for Broken Access Control (OWASP A01) — the models, bug classes, bypass techniques, real-world chains, and detection/prevention patterns that matter in modern web and API testing. Includes privilege escalation CVEs disclosed through 2026. 🔥 Latest Update: May 2, 2026 - Enhanced with 2026 privilege escalation CVEs including CVE-2025-26244 (DeimosC2), CVE-2026-25253+ (OpenClaw chain), CVE-2025-53767 (Azure OpenAI) from automated security intelligence. ...

Comprehensive Mobile Application Security Guide 🆕 Updated September 12, 2026 — added the EncryptedSharedPreferences deprecation, the DataStore + Tink replacement, and how to triage Android at-rest storage findings. A practitioner’s reference for iOS and Android application security — threat models, platform attack surface, reverse engineering, runtime instrumentation, bypass techniques, testing methodology, and defensive controls. Includes 2026 mobile threat intelligence. Table of Contents Fundamentals & Threat Model OWASP MASVS & MASTG Android Platform Attack Surface iOS Platform Attack Surface Insecure Storage Network Communication & TLS SSL / Certificate Pinning Bypass Reverse Engineering Workflow Runtime Instrumentation with Frida Root & Jailbreak Detection Bypass Deep Links & URL Schemes WebView Security Authentication, Biometrics & Session Cryptography & Key Management Resilience / Anti-Tamper / RASP Tooling Reference Testing Methodology Notable CVEs & Real-World Incidents Defensive Checklist 1. Fundamentals & Threat Model Mobile application security differs from traditional web security in three material ways. First, the attacker has the binary on their device and can take it apart at leisure — the app runs in a fundamentally hostile environment. Second, the OS provides strong sandboxing, code signing, and hardware-backed keystores that raise the bar but can be bypassed by a motivated attacker on a rooted or jailbroken device. Third, the attack surface spans the binary, the device, the local IPC boundary, the network, and the backend APIs — any of which can be the weak link. ...

Comprehensive Recon Guide 🆕 Updated September 12, 2026 — added open directories as a recon corpus, via Hunt.io’s breakdown of a live operator toolkit targeting Ukrainian infrastructure. A practitioner’s reference for web reconnaissance — attack surface discovery, subdomain enumeration, live host probing, content discovery, JS mining, cloud asset hunting, automation, and continuous monitoring. Enhanced for 2026 with modern cloud infrastructure discovery, ML-powered automation, and API reconnaissance techniques. Table of Contents Fundamentals Scope & Target Profiling Subdomain Enumeration DNS Brute Force & Permutation Live Host Discovery & HTTP Probing Port Scanning URL & Endpoint Crawling JavaScript Analysis Content & Directory Discovery Parameter Discovery Technology Fingerprinting Cloud Asset Discovery GitHub & Code Leak Hunting ASN & Infrastructure Expansion Container & Serverless Discovery Modern API Reconnaissance ML-Powered Automation Wordlist Resources Automation Pipelines Continuous Monitoring Real-World Recon Wins Quick Reference 1. Fundamentals Recon is 80% of offensive security. The researchers who earn six figures aren’t running more tools than everyone else — they’re running them in smarter pipelines, feeding the output of one into the next, and manually reviewing the long tail that automation misses. Every hour spent deepening the asset inventory pays off when hunting begins: more subdomains means more parameters, more endpoints, more code paths, more chances for a bug nobody else has seen. ...

Comprehensive Bug Bounty Hunting Guide 🆕 Updated September 12, 2026 — added the WPForms PayPal webhook duplicate story (CVE-2026-4986): what being reporter #11 tells you about target selection. A practitioner’s reference for modern bug bounty hunting — AI-augmented methodology, 2026 platform analysis, advanced reconnaissance pipelines, emerging vulnerability classes (SAML, WebAuthn, WASM), automated chaining, and data-driven career strategy. Enhanced with insights from 45+ methodology articles. Table of Contents Fundamentals & Mindset Bug Bounty Platforms Scope Analysis & Target Selection The End-to-End Methodology 2026 Methodology Advances Reconnaissance Pipeline Subdomain Enumeration Deep Dive Asset Discovery & Attack Surface Mapping JavaScript Analysis & Secret Hunting Content Discovery & Fuzzing Vulnerability Classes to Hunt Business Logic & Chaining Cloud, API & Web3 Attack Surfaces AI / LLM Testing Real-World Disclosed Writeups Report Writing & Triage Tools & Automation Stack Income & Payout Strategies Common Mistakes & Anti-Patterns Learning Resources Quick Reference Cheat Sheets 1. Fundamentals & Mindset Bug bounty hunting is the practice of finding and responsibly disclosing security vulnerabilities to organizations that reward researchers for their findings. Unlike traditional penetration testing, bug bounty is outcome-driven: no bug, no bounty. Payouts range from $50 nuisance bugs to $2M+ for critical cloud / crypto findings. ...

Comprehensive Burp Suite Guide 🆕 Updated September 12, 2026 — added Doyensec’s Session Switcher extension and why deterministic session swapping removes a whole class of authorization-testing error. A practitioner’s reference for Burp Suite — core tools, essential extensions, Bambdas and BChecks, Collaborator, macros and session handling, custom extension development, Burp AI, and real-world testing workflows. Table of Contents Fundamentals Proxy Repeater Intruder Scanner Comparer, Decoder, Sequencer Collaborator (OAST) Macros & Session Handling Target, Sitemap & Scope Essential BApp Extensions Turbo Intruder Bambdas BChecks Writing Custom Extensions (Montoya API) Burp AI 2026 Feature Updates and Modern Extensions Keyboard Shortcuts Real-World Workflows Troubleshooting & Tuning Learning Resources 1. Fundamentals Burp Suite, from PortSwigger, is the de-facto web application security testing platform. It is an intercepting proxy with a rich toolbox for manual and semi-automated testing. Three editions ship today: ...

🆕 Updated September 12, 2026 — added the Discuz! X5.0 chain: cross-context token reuse into a race condition into pre-auth RCE, and why a CAPTCHA in front of a race is a cost, not a boundary. Comprehensive Business Logic Flaws Guide A practitioner’s reference for business logic vulnerabilities — workflow bypass, race conditions, payment logic flaws, privilege escalation chains, and application context attacks. Includes 27 CVEs disclosed through 2026. 🆕 Newly Created: May 2, 2026 - Complete new guide built from 339 automated insights covering workflow bypass, race conditions, payment logic, and attack chains with 27 critical CVEs from comprehensive security research analysis. ...