mcp-server-semgrep/semgrep-rules/javascript/express/security/require-request.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: require-request
  message: >-
    If an attacker controls the x in require(x) then they can cause code to load that was not intended
    to run on the server.
  options:
    interfile: true
  metadata:
    interfile: true
    owasp:
    - A01:2021 - Broken Access Control
    cwe:
    - 'CWE-706: Use of Incorrectly-Resolved Name or Reference'
    source-rule-url: https://nodesecroadmap.fyi/chapter-1/threat-UIR.html
    category: security
    technology:
    - express
    references:
    - https://github.com/google/node-sec-roadmap/blob/master/chapter-2/dynamism.md#dynamism-when-you-need-it
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: MEDIUM
    confidence: MEDIUM
  languages:
  - javascript
  - typescript
  severity: ERROR
  mode: taint
  pattern-sources:
  - patterns:
    - pattern-either:
      - pattern-inside: function ... ($REQ, $RES) {...}
      - pattern-inside: function ... ($REQ, $RES, $NEXT) {...}
      - patterns:
        - pattern-either:
          - pattern-inside: $APP.$METHOD(..., function $FUNC($REQ, $RES) {...})
          - pattern-inside: $APP.$METHOD(..., function $FUNC($REQ, $RES, $NEXT) {...})
        - metavariable-regex:
            metavariable: $METHOD
            regex: ^(get|post|put|head|delete|options)$
    - pattern-either:
      - pattern: $REQ.query
      - pattern: $REQ.body
      - pattern: $REQ.params
      - pattern: $REQ.cookies
      - pattern: $REQ.headers
  - patterns:
    - pattern-either:
      - pattern-inside: |
          ({ $REQ }: Request,$RES: Response, $NEXT: NextFunction) =>
          {...}
      - pattern-inside: |
          ({ $REQ }: Request,$RES: Response) => {...}
    - focus-metavariable: $REQ
    - pattern-either:
      - pattern: params
      - pattern: query
      - pattern: cookies
      - pattern: headers
      - pattern: body
  pattern-sinks:
  - patterns:
    - pattern: require($SINK)
    - focus-metavariable: $SINK