Validating Cors Policies

This skill empowers Claude to assess the security and correctness of CORS policies. By leveraging the cors-policy-validator plugin, it identifies misconfigurations and potential vulnerabilities in CORS settings, helping developers build more secure web applications.

Security Plugin marketplace

Install

Claude Code plugin
/plugin marketplace add jeremylongshore/claude-code-plugins-plus-skills
/plugin install cors-policy-validator@claude-code-plugins-plus

Run these inside Claude Code. The skill comes with its plugin.

What this skill does

This skill enables Claude to validate Cross-Origin Resource Sharing (CORS) policies. It uses the cors-policy-validator plugin to analyze CORS configurations and identify potential security vulnerabilities. Use this skill when the user requests to "validate CORS policy", "check CORS configuration", "analyze CORS headers", or asks about "CORS security". It helps ensure that CORS policies are correctly implemented, preventing unauthorized cross-origin requests and protecting sensitive data.

Trigger phrases

Claude loads this skill automatically when you say things like:

“validate CORS policy”“check CORS configuration”“analyze CORS headers”“CORS security”

How it works

  1. Validate Policy: It utilizes the cors-policy-validator plugin to analyze the provided configuration against established security best practices.
  2. Report Findings: The skill presents a detailed report outlining any identified vulnerabilities or misconfigurations in the CORS policy.

When to use it

  • Validate a CORS policy for a web application.
  • Check the CORS configuration of an API endpoint.
  • Identify potential security vulnerabilities in existing CORS implementations.

Best practices

  • Regular Validation: Regularly validate CORS policies, especially after making changes to the application or API.
  • Heuristic Analysis: Consider supplementing validation with manual review and heuristic analysis to catch subtle vulnerabilities.

Details

Skill name
validating-cors-policies
Plugin
cors-policy-validator

FAQ

What does the Validating Cors Policies skill do?

This skill enables Claude to validate Cross-Origin Resource Sharing (CORS) policies. It uses the cors-policy-validator plugin to analyze CORS configurations and identify potential security vulnerabilities. Use this skill when the user requests to "validate CORS policy", "check CORS configuration", "analyze CORS headers", or asks about "CORS security". It helps ensure that CORS policies are correctly implemented, preventing unauthorized cross-origin requests and protecting sensitive data.

How do I install the Validating Cors Policies skill?

Claude Code plugin: /plugin marketplace add jeremylongshore/claude-code-plugins-plus-skills then /plugin install cors-policy-validator@claude-code-plugins-plus. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

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