mcp-server-semgrep/semgrep-rules/javascript/express/security/express-puppeteer-injection.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: express-puppeteer-injection
  message: >-
    If unverified user data can reach the `puppeteer` methods it can result in Server-Side Request Forgery
    vulnerabilities
  metadata:
    owasp:
    - A10:2021 - Server-Side Request Forgery (SSRF)
    cwe:
    - 'CWE-918: Server-Side Request Forgery (SSRF)'
    category: security
    technology:
    - express
    references:
    - https://pptr.dev/api/puppeteer.page
    cwe2022-top25: true
    cwe2021-top25: true
    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-either:
      - pattern-inside: |
          require('puppeteer');
          ...
      - pattern-inside: |
          import 'puppeteer';
          ...
    - pattern-either:
      - pattern: $PAGE.goto($SINK,...)
      - pattern: $PAGE.setContent($SINK,...)
      - pattern: $PAGE.evaluate($SINK,...)
      - pattern: $PAGE.evaluate($CODE,$SINK,...)
      - pattern: $PAGE.evaluateHandle($SINK,...)
      - pattern: $PAGE.evaluateHandle($CODE,$SINK,...)
      - pattern: $PAGE.evaluateOnNewDocument($SINK,...)
      - pattern: $PAGE.evaluateOnNewDocument($CODE,$SINK,...)
    - focus-metavariable: $SINK