# Improper Neutralization of Special Elements in Data Query Logic (CWE-943)

The product generates a query intended to access or manipulate data in a data store, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.

**Stack:** Python

- Prevalence: Alta Frecuentemente explotada
- Impact: Alto 3 reglas de severidad alta
- Prevention: Documentada 3 ejemplos de corrección

**OWASP:** Injection (A03:2021-Injection) - #3

## Description

This covers injection attacks against NoSQL databases, ORM frameworks, and other data query mechanisms that differ from traditional SQL injection.

## Prevention

Estrategias de prevención para NoSQL Injection basadas en 1 reglas de detección de Shoulder.

### Python

Validate input types and use ObjectId for ID fields

## Warning Signs

- [HIGH] untrusted user input being used in NoSQL queries without proper
validation

## Consequences

- Leer datos de la aplicación
- Modificar datos de la aplicación
- Eludir mecanismo de protección

## Mitigations

- Usa consultas parametrizadas para todos los almacenes de datos
- Valida y sanea la entrada antes de usarla en consultas
- Aplica el principio de mínimo privilegio a las cuentas de base de datos

## Detection

- Total rules: 3
- Languages: go, javascript, typescript, python

## Rules by Language

### Python (1 rules)

- **NoSQL Injection** [HIGH]: Detects untrusted user input being used in NoSQL queries without proper
validation.
  - Remediation: Validate and type-check user input before using in queries.

```python
from bson import ObjectId
object_id = ObjectId(user_id)  # Validates format
```

Learn more: https://shoulder.dev/learn/python/cwe-943/nosql-injection