Sensitive Data Exposure in loopback

loopback Updated 02 Oct 2025

Summary

02/09/2020

Disclosed on

LOW

Severity

Yes i

Fix available

Low

Severity

Not published

CVSS Score

GHSA-724c-6vrf-99rq: Sensitive Data Exposure in loopback. Affects loopback across 2 version ranges.

< 2.42.0 >= 3.0.0, < 3.26.0

Fixed in 2.42.0 or 3.26.0, depending on the release line you run. How to fix ↓

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Background

Loopback is an open-source Node.js framework for creating APIs and microservices. It provides a set of tools and conventions that help developers quickly build robust and scalable applications. Loopback is vulnerable to a sensitive data exposure issue, which allows unauthorized access to information about the first user in the database.

Vulnerability Detail

The vulnerability in loopback arises from invalid API requests to the login endpoint. When such requests are made, the application may inadvertently disclose information about the first user in the database. This can be exploited by attackers to steal credentials and potentially gain unauthorized access to the system. The vulnerability affects versions of loopback prior to 3.26.0 (3.x) and 2.42.0 (2.x).

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

< 2.42.0 2.42.0
```
npm install loopback@2.42.0
```
>= 3.0.0, < 3.26.0 3.26.0
```
npm install loopback@3.26.0
```

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Workaround

There is no specific workaround available for this vulnerability. It is essential to upgrade to the patched versions as mentioned in the 'how_to_fix' section.

Conclusion

Sensitive Data Exposure in loopback is a vulnerability that allows unauthorized access to information about the first user in the database. To mitigate this vulnerability, it is crucial to upgrade to the latest patched versions of loopback. For further support on vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for loopback →

FAQ

What is loopback?

Loopback is a Node.js framework for building APIs and microservices. It provides a set of tools and conventions that simplify the development process.

What is sensitive data exposure?

Sensitive data exposure refers to the unintentional disclosure of sensitive information, such as user credentials or personal data, to unauthorized individuals or systems.

How can the loopback vulnerability be exploited?

The loopback vulnerability can be exploited by sending invalid API requests to the login endpoint, which may reveal information about the first user in the database. Attackers can then use this information for credential theft and potentially gain unauthorized access to the system.