FuzzDB is an open-source dictionary and collection of fault injection patterns designed for dynamic application security testing. The tool provides comprehensive lists of attack payload primitives organized by attack type and platform, enabling security professionals to test applications for various vulnerabilities. The attack patterns database includes payloads for testing OS command injection, directory traversal, source code exposure, file upload bypass, authentication bypass, cross-site scripting (XSS), HTTP header CRLF injection, SQL injection, and NoSQL injection vulnerabilities. These patterns are categorized by attack type and platform where applicable. FuzzDB also contains discovery resources including dictionaries of predictable file and directory locations commonly found in standard software installations. This includes locations for log files, administrative directories, and other resources that are frequently placed in standard locations across different applications and platforms. The tool serves as a comprehensive resource for penetration testers and security researchers conducting fault injection testing and vulnerability assessments on web applications and other software systems.