Prototype Pollution in lutils-merge

Description

All versions of lutils-merge are vulnerable to Prototype Pollution. The merge() function fails to prevent user input to alter an Object’s prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with other vulnerabilities leading to Remote Code Execution.

Recommendation

No fix is available yet. Followings are affected versions:

• <= 0.2.6

References

• GHSA-f7qw-5pvg-mmwp
• hackerone.com
• www.npmjs.com
• snyk.io
• CWE-400

Related Issues

• Prototype Pollution in lodash.merge - lodash.merge - Vulnerability
• Prototype Pollution in lodash.merge - Vulnerability
• @75lb/deep-merge Prototype Pollution vulnerability - CVE-2024-38986
• Vuetify has a Prototype Pollution vulnerability - CVE-2025-8083

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

lutils-merge