mcp-server-semgrep/semgrep-rules/python/lang/security/audit/mako-templates-detected.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: mako-templates-detected
  pattern: mako.template.Template(...)
  message: >-
    Mako templates do not provide a global HTML escaping mechanism.
    This means you must escape all sensitive data in your templates
    using '| u' for URL escaping or '| h' for HTML escaping.
    If you are using Mako to serve web content, consider using
    a system such as Jinja2 which enables global escaping.
  metadata:
    cwe:
    - "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
    owasp:
    - A07:2017 - Cross-Site Scripting (XSS)
    - A03:2021 - Injection
    source-rule-url: https://github.com/PyCQA/bandit/blob/b1411bfb43795d3ffd268bef17a839dee954c2b1/bandit/plugins/mako_templates.py
    references:
    - https://docs.makotemplates.org/en/latest/syntax.html#expression-escaping
    - https://jinja.palletsprojects.com/en/2.11.x/intro/#
    category: security
    technology:
    - mako
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: MEDIUM
    confidence: LOW
  languages: [python]
  severity: INFO