rules:
- id: backticks-use
  pattern: '`...`;'
  message: >-
    Backticks use may lead to command injection vulnerabilities.
  metadata:
    cwe:
    - "CWE-94: Improper Control of Generation of Code ('Code Injection')"
    references:
    - https://www.php.net/manual/en/language.operators.execution.php
    - https://github.com/FloeDesignTechnologies/phpcs-security-audit/blob/master/Security/Sniffs/BadFunctions/BackticksSniff.php
    category: security
    technology:
    - php
    owasp:
    - A03:2021 - Injection
    - A05:2025 - Injection
    cwe2022-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: HIGH
    confidence: LOW
  languages: [php]
  severity: ERROR