Malicious Code Vulnerability in solhint-plugin-hyperlane: Potential Data Exfiltration Risk

solhint-plugin-hyperlane Updated 27 Jan 2026

Summary

27/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-547: Malicious code in solhint-plugin-hyperlane (PyPI). Affects solhint-plugin-hyperlane versions 0.1.0. No fix is published. How to fix ↓

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Background

solhint-plugin-hyperlane is a package available on PyPI that is designed to assist developers in linting Solidity code for smart contracts. It aims to improve code quality and security by providing feedback on potential issues. However, this package has been identified as malicious, containing code that can compromise user data during installation.

Vulnerability Detail

The vulnerability originates from a malicious campaign identified as 'GENERIC-questionable-pentest'. The package overrides the install command in setup.py, executing harmful code that can exfiltrate environment variables and other sensitive data during installation. This poses significant risks, including unauthorized access to sensitive information and potential exploitation by attackers.

How To Fix

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

pip uninstall solhint-plugin-hyperlane

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 →

Workaround

As a temporary workaround, avoid installing the solhint-plugin-hyperlane package until a patched version is confirmed. If you need similar functionality, consider using alternative packages that do not have known vulnerabilities.

Conclusion

The solhint-plugin-hyperlane package has been identified as malicious, posing significant risks to users through potential data exfiltration. It is essential to uninstall the affected version and monitor for updates. Utilizing tools like Vulert can help maintain security in your software dependencies.

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FAQ

solhint-plugin-hyperlane is a linting tool for Solidity code, helping developers identify potential issues in their smart contracts.

The vulnerability allows malicious code to execute during installation, potentially exfiltrating sensitive data from the user's environment.

If you have installed solhint-plugin-hyperlane, immediately uninstall it and check for any updates or patches before reinstalling.

Yes, consider using other linting tools for Solidity that are known to be secure and do not have reported vulnerabilities.

You can use tools like Vulert, which monitors and alerts for open-source vulnerabilities in your software using Pipfile.lock. You can check your application against known vulnerabilities using the Vulert playground without signing up.

Related vulnerabilities

Recent vulnerabilities recorded for solhint-plugin-hyperlane.

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How To Fix

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

pip uninstall solhint-plugin-hyperlane

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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