Malicious Code Injection in ministerial_opossum_requirement Package

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-95492: Malicious code in ministerial_opossum_requirement (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The ministerial_opossum_requirement package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is suspected to be involved in a token reward campaign that aims to inflate developer reputation scores by flooding the npm registry with derivative packages. It is designed to automate the publishing process, which can lead to significant issues in the integrity of the npm ecosystem.

Vulnerability Detail

The vulnerability in the ministerial_opossum_requirement package stems from its malicious code that modifies the package.json file. This code removes private flags, alters version numbers, and generates random package names, which can lead to the pollution of the npm registry. The origin of this vulnerability is linked to a campaign that exploits npm's publishing mechanisms to create numerous derivative packages, potentially compromising the security and reliability of applications that depend on this package.

How To Fix

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

npm uninstall ministerial_opossum_requirement

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, you can remove the ministerial_opossum_requirement package from your project by executing 'npm uninstall ministerial_opossum_requirement'. This will prevent any malicious code from executing until a fix is applied.

Conclusion

The ministerial_opossum_requirement package contains a serious vulnerability due to its malicious code that alters package configurations and floods the npm registry. It is crucial for developers to take immediate action by updating or removing the package to protect their applications from potential risks.

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FAQ

It is an npm package that is part of a campaign to inflate developer reputation scores by flooding the npm registry with derivative packages.

The vulnerability can lead to the pollution of the npm registry, potentially compromising the security and integrity of applications that rely on this package.

You should immediately update or uninstall the ministerial_opossum_requirement package to mitigate the risk associated with this vulnerability.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

How To Fix

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

npm uninstall ministerial_opossum_requirement

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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