mcp-server-semgrep/semgrep-rules/javascript/lang/security/audit/hardcoded-hmac-key.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: hardcoded-hmac-key
  message: >-
    Detected a hardcoded hmac key. Avoid hardcoding secrets and consider using an alternate
    option such as reading the secret from a config file or using an environment variable.
  options:
    interfile: true
  metadata:
    interfile: true
    category: security
    technology:
    - crypto
    - hmac
    references:
    - https://rules.sonarsource.com/javascript/RSPEC-2068
    - https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html#key-management
    owasp:
    - A07:2021 - Identification and Authentication Failures
    cwe:
    - 'CWE-798: Use of Hard-coded Credentials'
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  languages:
  - javascript
  - typescript
  severity: WARNING
  pattern-either:
  - pattern: $CRYPTO.createHmac($ALGO, '...')
  - patterns:
    - pattern-inside: |
        const $SECRET = '...'
        ...
    - pattern: $CRYPTO.createHmac($ALGO, $SECRET)