Malicious Code Injection in ocha-tiwul100-miaww Package - npm Vulnerability

ocha-tiwul100-miaww Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-89043: Malicious code in ocha-tiwul100-miaww (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The ocha-tiwul100-miaww package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign that aims to exploit npm's publishing system. It is designed to generate and publish derivative packages with randomized names, thereby inflating developer reputation scores for token rewards. The malicious nature of this package poses significant risks to developers and users relying on npm for secure package management.

Vulnerability Detail

The vulnerability originates from the ocha-tiwul100-miaww package, which is involved in a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially compromising the integrity of the software supply chain. The malicious payload can affect any project that inadvertently includes this package, leading to security risks and potential exploitation.

How To Fix

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

npm uninstall ocha-tiwul100-miaww

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, you can avoid using the ocha-tiwul100-miaww package and any other packages that may be part of the malicious campaign. Regularly audit your dependencies using tools like npm audit to identify and mitigate potential vulnerabilities.

Conclusion

The ocha-tiwul100-miaww package presents a significant security vulnerability due to its malicious behavior of modifying package metadata and republishing variants. It is crucial for developers to remove this package from their projects and utilize tools like Vulert to monitor for vulnerabilities in real-time. Staying vigilant and proactive in managing dependencies can help mitigate risks associated with open-source packages.

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FAQ

The ocha-tiwul100-miaww package is an npm package identified as part of a malicious campaign that modifies package metadata and publishes random variants.

You can use tools like Vulert, which monitors your package-lock.json for vulnerabilities. Visit Vulert Scanner to check if your application is affected without any signup.

Using the ocha-tiwul100-miaww package can lead to security vulnerabilities, including the potential for unauthorized access to your application and data.

There is no patch for the ocha-tiwul100-miaww package itself. The recommended action is to uninstall the package and remove any dependencies that may be affected.

Regularly audit your dependencies, use trusted sources for packages, and monitor for vulnerabilities using tools like Vulert to stay informed about potential risks.

How To Fix

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

npm uninstall ocha-tiwul100-miaww

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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