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# Leakage of sensitive data in exception message

## Overview

* **Rule ID**: `javascript_lang_exception`
* **Applicable Languages**: Javascript
* **Weakness ID**: CWE-210

## Description

Leakage of sensitive data in exception messages can lead to data breaches. This vulnerability arises when sensitive information, such as system details or user data, is included in exception messages. Such exposure can provide unauthorized users with valuable insights into the application's internal workings or access to confidential information, increasing the risk of a security breach.

## Remediation Guidelines

* **Do not** include sensitive data in exception messages. This can inadvertently expose personal or confidential information.

  ```java
  throw new CustomError(`Error with ${user.email}`) // unsafe

  ```
* **Do use** non-sensitive, unique identifiers in exception messages to maintain user privacy and data security.

  ```java
  throw new CustomError(`Error with ${user.uuid}`)
  ```

## References

* [**CWE-210: Self-generated Error Message Containing Sensitive Information**](https://cwe.mitre.org/data/definitions/210.html)

## 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)