# Leakage of sensitive data in dynamic file generation

## Overview

* **Rule ID**: `javascript_lang_file_generation`
* **Applicable Languages**: Javascript
* **Weakness ID**: CWE-313

## Description

Sensitive data leakage in dynamic file generation occurs when confidential information is written to static files, such as logs, backups, or data exports. This vulnerability can expose sensitive data to unauthorized access, increasing the risk of data breaches or misuse.

## Remediation Guidelines

* **Do not** write sensitive data directly to logs, backups, or data exports. This practice can lead to unauthorized access and compromise the confidentiality of the information.

  ```java
  fs.writeFile("data.csv", JSON.stringify(users), "utf-8", (err) => {
    if (err) console.log(err)
  })

  ```
* **Do** obfuscate or filter sensitive data before writing it to static files. This reduces the risk of sensitive data exposure.

## References

* [**CWE-313: Cleartext Storage in a File or on Disk**](https://cwe.mitre.org/data/definitions/313.html)
* [**OWASP Top 10: A04:2021 - Insecure Design**](https://owasp.org/Top10/A04_2021-Insecure_Design/)

## Configuration

To omit this rule during a scan, and to provide you with continuous 24/7 code-level scanning, you can employ our [**SAST TOOL**](https://scopy.sec1.io/login)


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