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cors-check

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Detect CORS misconfigurations and risky origins.

Software Engineering#web-security#cors#access-control#security-testing#cors-check#origin-header
Authorwoohyun212
Version1.0.0
Installs0

System Documentation

What problem does it solve?

CORS misconfigurations in APIs can enable unauthorized access or data leakage. This skill tests how an API responds to a variety of Origin headers to determine whether cross-origin access controls are correctly enforced.

Core Features & Use Cases

  • Detects origin reflection in ACAO responses and identifies credential leakage risks.
  • Assesses unsafe configurations such as wildcard origins with credentials and null origins across endpoints.
  • Provides remediation guidance and risk assessment to improve API security.

Quick Start

Provide a target URL and run the cors-check skill to assess its CORS policy.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: cors-check
Download link: https://github.com/woohyun212/security-skill/archive/main.zip#cors-check

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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