Critical Malicious Code Vulnerability in mathsbase Package

mathsbase Updated 22 Sep 2026

Summary

21/09/2026

Disclosed on

CRITICAL

Severity

No i

Fix available

Critical

Severity

Not published

CVSS Score

MAL-2026-16369: Malicious code in mathsbase (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The mathsbase package is an npm library designed for performing mathematical operations and calculations. It is commonly used in JavaScript applications to simplify complex math tasks. However, this package has been identified as containing malicious code that poses significant security risks to any system where it is installed.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code within the mathsbase package, which has been confirmed by security researchers. This code can compromise the entire system, allowing unauthorized access to sensitive information such as secrets and keys. The presence of this malicious code means that any computer running this package should be considered fully compromised, and there is a risk that simply removing the package may not eliminate all traces of the malicious software.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall mathsbase

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

There are no effective workarounds for this vulnerability other than removing the package and ensuring that your system is secure. It is advisable to monitor your system for any unusual activity after the removal.

Conclusion

The mathsbase package has been identified as containing malicious code that poses a serious security threat. It is essential to uninstall this package immediately and take steps to secure any sensitive information. Utilizing tools like Vulert can help monitor for vulnerabilities in your applications effectively.

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