Vulnerability library
Security checkJanuary 09, 2023

Prototype Pollution in lutils-merge

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Medium severitynpmlutils-merge

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

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

Could your website be exposed too?

SmartScanner can check your website for Prototype Pollution in lutils-merge and gives you actionable findings to investigate.

Start a free scan

Related Issues

You might also like:

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

See something that needs correcting? Let us knowUpdated January 09, 2023