Dalfox is a command-line security testing tool designed to identify cross-site scripting (XSS) vulnerabilities in web applications. It combines automated parameter analysis with vulnerability testing to help security professionals investigate potentially unsafe input handling.
The software examines HTTP parameters and other request components, using analysis and testing techniques to identify possible injection points. It supports testing for reflected, stored and DOM-based XSS vulnerabilities, with additional verification facilities for reducing false positives.
Dalfox can scan individual URLs, process lists of targets and read input from pipelines. Its configurable HTTP handling supports custom headers, cookies, proxy settings and payloads, making it suitable for both manual assessments and automated security workflows.
It also provides web application firewall fingerprinting, multiple report formats and interfaces for integration with other security testing tools.
This is free and open source software.
Key Features
- Test web applications for reflected, stored and DOM-based XSS vulnerabilities.
- Analyse parameters and discover potential injection points.
- Use static analysis and parameter mining during discovery.
- Verify potential findings through DOM and AST analysis.
- Identify web application firewalls through fingerprinting.
- Support custom HTTP headers, cookies, methods and proxy settings.
- Process individual URLs, files and piped input.
- Use custom payloads and remote wordlists.
- Generate reports in JSON, JSONL, Markdown, SARIF and other formats.
- Provide server and MCP interfaces for integration with other tools.
- Support automation through command-line and REST interfaces.
Website: github.com/hahwul/dalfox
Support:
Developer: HAHWUL
License: MIT License

Dalfox is written in Rust. Learn Rust with our recommended free books and free tutorials.
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