XSSer

XSSer is an open-source tool available on GitHub that focuses on finding and exploiting XSS (Cross-Site Scripting) vulnerabilities in web applications. It provides a command-line interface for security professionals and ethical hackers to efficiently detect and verify XSS vulnerabilities.

One notable feature of XSSer is its ability to generate reports with detailed descriptions of discovered vulnerabilities, making it easier to understand potential risks and prioritize them. The tool also offers options for fine-tuning the scanning process and adapting to various web application scenarios.

Introduction

Cross Site "Scripter" (aka XSSer) is an automatic -framework- to detect, exploit and report XSS vulnerabilities in web-based applications. It provides several options to try to bypass certain filters and various special techniques for code injection.

Key features

Widely regarded as one of the most complete and influential XSS frameworks ever released — used, shipped, taught and cited across the security world since 2010.

[ > 1500 ] pre-installed XSS attacking vectors (automatic fuzzing).

Targeting: URL, file, stdin/pipe, raw HTTP request (-r), 'dorking' (multiple engines) and crawler.

Injection: GET/POST, Cookie/User-Agent/Referer, DOM and HTTP Response Splitting.

Evasion: per-WAF bypassers + character-encoding bypassers; proxy/Tor; client-certificate auth.

Validation: each finding is verified for real executability — a context-aware engine tells apart executable contexts (HTML, JS, event handlers, javascript:/data: URIs) from harmless reflections, with an optional headless-browser reverse connection to confirm findings and cut false positives.

Reporting: PDF (professional), XML and JSON (for CI / pipelines).

XSSer can bypass-exploit code on several WAFs:

[Cloudflare] Cloudflare WAF

[Akamai] Akamai (Kona / App & API Protector)

[AWS] AWS WAF

[Azure] Azure Front Door WAF

[Imperva] Imperva (Incapsula / Cloud WAF)

[F5] F5 BIG-IP ASM / Advanced WAF

[Barracuda] Barracuda WAF

[ModSec] Mod-Security + OWASP CRS v3

[Wordfence] Wordfence (WordPress)

[Sucuri] Sucuri (CloudProxy)

[FortiWeb] Fortinet FortiWeb

[WebKnight] AQTRONIX WebKnight