XSStrike: Detect Cross-Site Scripting Vulnerabilities

Overview

XSStrike is a Python cross-site scripting (XSS) detection suite for security testers assessing web applications. Its core approach is to analyze server responses with four hand-written parsers, then use context analysis and a fuzzing engine to craft payloads, rather than simply inject a fixed set and check for a match. The project also draws on Photon, Zetanize, and Arjun for parts of its workflow.

It covers reflected and DOM XSS, with crawling, parameter discovery, and WAF detection intended to help testers find and investigate potential injection points. The repository is marked inactive: it has had no commits in over a year, and most recorded contributions come from one person, so its current maintenance pace is an important factor in adoption.

Key Features

• Scans for reflected and DOM-based XSS.
• Analyzes response context with hand-written HTML and JavaScript parsers.
• Generates context-aware payloads and provides a fuzzing engine.
• Crawls targets with multiple threads.
• Discovers parameters and supports payload bruteforcing from a file.
• Detects and attempts to evade web application firewalls (WAFs).
• Supports blind XSS workflows and scanning for outdated JavaScript libraries.
• Provides HTTP support, including an interactive prompt for HTTP headers.

Use Cases

• A penetration tester can use it to check authorized web application inputs for reflected XSS during an assessment.
• An application security engineer can crawl an in-scope site and test discovered parameters for likely injection points.
• A security researcher can use its fuzzing and payload-file options to investigate how a particular application handles XSS test cases.
• A tester evaluating a WAF can examine XSStrike's detection and evasion capabilities against systems they are authorized to assess.

Getting Started

git clone https://github.com/s0md3v/XSStrike
cd XSStrike
pip install -r requirements.txt --break-system-packages
python xsstrike.py

See the README and the Usage guide for options and details.

Considerations

The repository is marked inactive, with no commits in over a year and no releases in over a year. Although it has 25 recorded contributors, about nine-tenths of contributions are attributed to one person; only one issue was closed in the measured recent period, and no pull requests were merged. This is a meaningful maintenance risk for a security tool, where compatibility and detection behavior can change as web technologies evolve. The project requires Python and its listed dependencies, and is licensed under GPL-3.0, which teams should assess for their intended use and distribution.