Unsanitized user input in SQL query detected.

• Rule ID: ruby_rails_sql_injection
• Languages: ruby
• Source: sql_injection.yml

Description

Including unsanitized data, such as user input or request data, in raw SQL queries makes your application vulnerable to SQL injection attacks.

Remediations

❌ Avoid raw queries, especially those that contain unsanitized user input:

User.where("user.email = #{params[:email]}")

✅ Use the ActiveRecord API wherever possible:

User.where(email: params[:email])

✅ Use bind variables:

User.where("user.email = ?", [params[:email]])

✅ Santize the value manually:

User.where(sanitize_sql(["user.email = ?", params[:email]]))

Resources

• OWASP SQL injection explained
• OWASP SQL injection prevention cheat sheet
• Securing Rails applications - SQL injection

Associated CWE

• CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

OWASP Top 10

• A03:2021 - Injection