What is Cross-Site Request Forgery (CSRF)?

Cross-Site Request Forgery (CSRF) is a significant web security threat where attackers manipulate authenticated user sessions to execute unintended actions on their behalf, like financial transactions or data manipulation. CSRF attacks exploit predictable HTTP request patterns and automatically appended session cookies in browsers. Despite being removed from OWASP's top vulnerabilities list in 2017, CSRF remains a lucrative target for attackers, especially in systems lacking robust defenses like token-based verification, which can make requests unpredictable. Effective defenses include synchronizer tokens, encrypted tokens, and double-submitted cookies, often integrated into frameworks like Spring, Django, and AngularJS. However, these defenses must be implemented correctly, as cross-site scripting (XSS) vulnerabilities can undermine them. Automated tools like StackHawk aid in detecting and fixing CSRF and other vulnerabilities as part of a comprehensive security strategy, highlighting the importance of incorporating automated testing in the CI/CD pipeline to maintain a secure codebase.