mcp-server-semgrep/semgrep-rules/python/flask/security/audit/wtf-csrf-disabled.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: flask-wtf-csrf-disabled
  message: >-
    Setting 'WTF_CSRF_ENABLED' to 'False' explicitly disables CSRF protection.
  options:
    symbolic_propagation: true
  metadata:
    cwe:
    - 'CWE-352: Cross-Site Request Forgery (CSRF)'
    owasp:
    - A01:2021 - Broken Access Control
    references:
    - https://flask-wtf.readthedocs.io/en/1.2.x/csrf/
    category: security
    technology:
    - flask
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: MEDIUM
    confidence: LOW
    functional-categories:
    - web::search::csrf-config::flask
    - web::search::csrf-config::flask-wtf
  severity: WARNING
  languages:
  - python
  patterns:
  - pattern-either:
    - patterns:
      - pattern-either:
        - pattern: $APP.config["WTF_CSRF_ENABLED"] = $FALSE
        - pattern: $APP.config.WTF_CSRF_ENABLED = $FALSE
        - patterns:
          - pattern: |
              $APP.config.$UPDATE(
                ...,
                WTF_CSRF_ENABLED = $FALSE,
                ...
              )
          - pattern-not-inside: |
              $APP.config.$UPDATE(
                  ...,
                  TESTING=True,
                  ...
              )
          - pattern-not-inside: |
              $APP.config.$UPDATE(
                  ...,
                  DEBUG=True,
                  ...
              )
          - metavariable-regex:
              metavariable: $UPDATE
              regex: ^(update|from_mapping)$
        - pattern: |
            $OBJ = $CLASS()
            ...
            $OBJ.WTF_CSRF_ENABLED = $FALSE
            ...
            $APP.config.from_object($OBJ, ...)
        - pattern: |
            WTF_CSRF_ENABLED = $FALSE
            ...
            $APP.config.from_object(__name__)
      - metavariable-regex:
          metavariable: $FALSE
          regex: ^(False)$
      - focus-metavariable: $FALSE
  fix: 'True'