server-side

Identify server-side vulnerabilities across web applications and APIs.

Updated Apr 23, 2026
One-click install
npx skills add https://github.com/YukiIto1999/ctf-sleuth --skill server-side
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: server-side
Source: https://github.com/YukiIto1999/ctf-sleuth/tree/main/.claude/skills/server-side
Command: npx skills add https://github.com/YukiIto1999/ctf-sleuth --skill server-side

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Server-side security is often fragile due to misconfigured backends and complex vulnerability chains. This Skill helps identify, analyze, and mitigate server-side weaknesses across common attack vectors such as SSRF, HTTP request smuggling, path traversal, file upload, and insecure deserialization, enabling faster remediation.

Core Features & Use Cases

  • Comprehensive vulnerability coverage: guides testing across SSRF, host header injection, path traversal, file upload, and deserialization risks.
  • Reference-rich learning: consolidates cheat sheets and lab materials for deep understanding of server-side exploits and defenses.
  • Mitigation-focused guidance: provides actionable steps to implement secure configurations and coding practices.

Quick Start

Run this skill to scan a target web application for common server-side vulnerabilities and apply mitigation guidance.

Frequently Asked Questions about server-side

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test for SSRF vulnerabilities in web applications?

To test for SSRF vulnerabilities, this Skill provides testing workflows that identify server-side request forgery risks by analyzing backend request handling and applying mitigation guidance to secure configurations.

What is the best way to detect insecure deserialization risks in APIs?

Detecting insecure deserialization involves analyzing data parsing workflows in APIs, and this Skill offers reference materials and cheat sheets to identify exploitation risks and implement secure coding practices for remediation.

Can I use this to scan for path traversal and file upload vulnerabilities?

Yes, you can scan for path traversal and file upload vulnerabilities across web applications and APIs, receiving actionable steps to apply secure configurations and harden the server-side security posture against these attacks.

How does HTTP request smuggling testing work?

HTTP request smuggling testing works by identifying discrepancies in how frontend and backend servers interpret HTTP requests, utilizing provided reference materials to understand exploit mechanisms and apply defensive best practices.

Does this Skill provide defensive best practices for server-side security hardening?

Yes, it provides defensive best practices for server-side security hardening, delivering mitigation-focused guidance and actionable steps to implement secure configurations across vulnerable web application and API endpoints.

Are there reference materials included for learning about server-side exploits?

Yes, reference materials including cheat sheets and lab resources are consolidated within the Skill to provide a deep understanding of server-side vulnerabilities, exploitation techniques, and their corresponding defenses.