This document discusses the top 10 web application security vulnerabilities as identified by OWASP (Open Web Application Security Project). It provides an overview of each vulnerability, examples, and recommendations for countermeasures. The vulnerabilities covered are injection, broken authentication and session management, cross-site scripting (XSS), insecure direct object references, security misconfiguration, sensitive data exposure, missing function level access control, cross-site request forgery (CSRF), using components with known vulnerabilities, and unvalidated redirects and forwards. The document emphasizes using features in Oracle Application Development Framework (ADF) to help address many of these vulnerabilities.