mcp-server-semgrep/semgrep-rules/php/lang/security/php-permissive-cors.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: php-permissive-cors
  patterns:
  - pattern: header($VALUE,...)
  - pattern-either:
    - pattern: header("...",...)
    - pattern-inside: |
        $VALUE = "...";
        ...
  - metavariable-regex:
      metavariable: $VALUE
      regex: (\'|\")\s*(Access-Control-Allow-Origin|access-control-allow-origin)\s*:\s*(\*)\s*(\'|\")
  message: >-
    Access-Control-Allow-Origin response header is set to "*".
    This will disable CORS Same Origin Policy restrictions.
  metadata:
    references:
    - https://developer.mozilla.org/ru/docs/Web/HTTP/Headers/Access-Control-Allow-Origin
    owasp:
    - A07:2021 - Identification and Authentication Failures
    cwe:
    - 'CWE-346: Origin Validation Error'
    category: security
    technology:
    - php
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  languages: [php]
  severity: WARNING