mcp-server-semgrep/semgrep-rules/ruby/lang/security/json-entity-escape.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: json-entity-escape
  pattern-either:
  - pattern: |
      ActiveSupport.escape_html_entities_in_json = false
  - pattern: |
      config.active_support.escape_html_entities_in_json = false
  message: >-
    Checks if HTML escaping is globally disabled for JSON output. This could lead
    to XSS.
  metadata:
    cwe:
    - "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
    source-rule-url: https://github.com/presidentbeef/brakeman/blob/main/lib/brakeman/checks/check_json_entity_escape.rb
    category: security
    technology:
    - ruby
    owasp:
    - A07:2017 - Cross-Site Scripting (XSS)
    - A03:2021 - Injection
    references:
    - https://owasp.org/Top10/A03_2021-Injection
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: MEDIUM
    confidence: LOW
  languages:
  - ruby
  severity: WARNING