mcp-server-semgrep/semgrep-rules/javascript/express/security/express-jwt-hardcoded-secret.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: express-jwt-hardcoded-secret
  message: >-
    A hard-coded credential was detected. It is not recommended to store credentials in source-code,
    as this risks secrets
    being leaked and used by either an internal or external malicious adversary. It is recommended to
    use environment variables to securely provide credentials or retrieve credentials from a secure
    vault or HSM (Hardware Security Module).
  options:
    interfile: true
  metadata:
    interfile: true
    cwe:
    - 'CWE-798: Use of Hard-coded Credentials'
    references:
    - https://cheatsheetseries.owasp.org/cheatsheets/Secrets_Management_Cheat_Sheet.html
    owasp:
    - A07:2021 - Identification and Authentication Failures
    category: security
    technology:
    - express
    - secrets
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: HIGH
    impact: MEDIUM
    confidence: HIGH
  languages:
  - javascript
  - typescript
  severity: WARNING
  patterns:
  - pattern-either:
    - pattern-inside: |
        $JWT = require('express-jwt');
        ...
    - pattern-inside: |
        import $JWT from 'express-jwt';
        ...
    - pattern-inside: |
        import * as $JWT from 'express-jwt';
        ...
    - pattern-inside: |
        import { ..., $JWT, ... } from 'express-jwt';
        ...
  - pattern-either:
    - pattern: |
        $JWT({...,secret: "$Y",...},...)
    - pattern: |
        $OPTS = "$Y";
        ...
        $JWT({...,secret: $OPTS},...);
  - focus-metavariable: $Y