Critical Security Breach in @voiceflow/commitlint-config: Malicious Code Detected

@voiceflow/commitlint-config Updated 25 Nov 2025

Summary

25/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-191339: Malicious code in @voiceflow/commitlint-config (npm). Affects @voiceflow/commitlint-config versions 2.6.1 – 2.6.2. No fix is published. How to fix ↓

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Background

The @voiceflow/commitlint-config package is an npm package designed to enforce commit message conventions in projects using commitlint. It helps maintain a consistent commit history by validating commit messages against specified rules. However, this package has been compromised, making it vulnerable to severe security threats.

Vulnerability Detail

The vulnerability stems from a malicious code injection by the Sha1-Hulud: The Second Coming NPM worm. This worm is capable of stealing tokens and credentials from the user's environment and publishing them to GitHub. It can also propagate itself to other npm packages owned by the user and establish persistence through GitHub actions. Additionally, there is a risk of the worm destroying the user's home directory, leading to significant data loss.

How To Fix

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

npm uninstall @voiceflow/commitlint-config

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

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Workaround

As a temporary workaround, consider removing the @voiceflow/commitlint-config package from your project until a secure version is confirmed. You can do this by executing the command: 'npm uninstall @voiceflow/commitlint-config'. Additionally, monitor your environment for any unauthorized access or changes.

Conclusion

The @voiceflow/commitlint-config package has been compromised by a malicious npm worm, posing serious security risks. It is essential to update the package to a secure version and monitor your environment for any signs of compromise. Utilizing tools like Vulert can help in identifying vulnerabilities in your software.

See every vulnerability recorded for @voiceflow/commitlint-config →

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FAQ

The malicious code is part of an npm worm that steals sensitive information and can propagate to other packages.

You can use Vulert, which monitors open-source vulnerabilities in your software. Simply upload your package-lock.json file to the Vulert playground at Vulert Scanner to check for vulnerabilities.

If you suspect that your environment has been compromised, immediately change your tokens and credentials, and review your GitHub repositories for unauthorized changes.

Regularly update your dependencies, use tools like Vulert for real-time monitoring, and conduct security audits on your codebase.

Failing to address this vulnerability can lead to unauthorized access to your credentials, data loss, and potential damage to your project's integrity.

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How To Fix

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

npm uninstall @voiceflow/commitlint-config

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

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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