rules:
- id: ruby-jwt-decode-without-verify
  message: >-
    Detected the decoding of a JWT token without a verify step.
    JWT tokens must be verified before use, otherwise the token's
    integrity is unknown. This means a malicious actor could forge
    a JWT token with any claims.
  metadata:
    cwe: 'CWE-345: Insufficient Verification of Data Authenticity'
    owasp: 'A2: Broken Authentication'
    source-rule-url: https://r2c.dev/blog/2020/hardcoded-secrets-unverified-tokens-and-other-common-jwt-mistakes/
    category: security
    technology:
    - jwt
  languages: [ruby]
  severity: WARNING
  patterns:
  - pattern-inside: |
      require 'jwt'
      ...
  - pattern: |-
      JWT.decode($PAYLOAD,$SECRET,false,...)