top-web-vulnerabilities
Helps your agent identify and understand common website security flaws. It provides a guide to fix these issues and protect applications.
What it does
This resource provides an organized list of the 100 most critical security flaws in websites and web applications. It helps identify, understand the impact of, and fix these flaws.
When to use it
- ✓When learning about website security.
- ✓When assessing the security of a web application.
- ✓When looking for how to fix a known security issue.
Example of what to ask your AI
“What are the top 10 website security flaws and how can I fix them?”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
It works like a reference guide. You can ask about specific flaws or categories of flaws, and it will provide detailed information on what they are, how they work, and how to protect against them.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add sickn33/agentic-awesome-skills --skill top-web-vulnerabilitiesOr download just the file:
curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/top-web-vulnerabilities/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
⚠️ AUTHORIZED USE ONLY This skill is for educational purposes or authorized security assessments only. You must have explicit, written permission from the system owner before using this tool. Misuse of this tool is illegal and strictly prohibited.
Mandatory confirmation gate Before running any command that probes, exploits, changes, persists on, extracts data from, or attempts credential access against a target:
- Ask the user to state the exact target URL, IP, account, or resource.
- Ask the user to confirm written authorization and the permitted scope.
- Show the exact command(s) and explain their expected effect.
- Wait for explicit confirmation in the current conversation.
Without that confirmation, remain read-only and provide defensive guidance only. Prefer a sandbox, disposable VM, or controlled lab.
Top 100 Web Vulnerabilities Reference
Detailed Guide
Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely.
Prerequisites
- Basic understanding of web application architecture (client-server model, HTTP protocol)
- Familiarity with common web technologies (HTML, JavaScript, SQL, XML, APIs)
- Understanding of authentication and authorization concepts
- Access to web application security testing tools (Burp Suite, OWASP ZAP)
- Knowledge of secure coding principles recommended
Constraints and Limitations
- Vulnerability definitions represent common patterns; specific implementations vary
- Mitigations must be adapted to technology stack and architecture
- New vulnerabilities emerge continuously; reference should be updated
- Some vulnerabilities overlap across categories (e.g., IDOR appears in multiple contexts)
- Effectiveness of mitigations depends on proper implementation
- Automated scanners cannot detect all vulnerability types (especially business logic)
When to Use
This skill is applicable to execute the workflow or actions described in the overview.
FAQ
Do I need permission to use this tool?
Yes, this tool is for educational purposes or authorized security assessments only. You need explicit, written permission from the system owner before using it.
What happens if I try to use this tool without permission?
Misuse of this tool is illegal and strictly prohibited. The tool has a safety mechanism that requires confirmation before performing any actions that could affect a system.
Does this tool find all security vulnerabilities?
No, it covers the 100 most critical flaws, but new vulnerabilities emerge constantly. Also, some vulnerabilities, especially those related to business logic, may not be detected by automated scanners.
Details
Original description by the author
Provide a comprehensive, structured reference for the 100 most critical web application vulnerabilities organized by category. This skill enables systematic vulnerability identification, impact assessment, and remediation guidance across the full spectrum of web security threats.
Popularity
- GitHub stars
- 48k
- Ranking position
- #4391
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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