Critical Malicious Code Vulnerability in rediff Package
Summary
MAL-2025-191416: Malicious code in rediff (npm). Affects rediff versions 1.0.5. No fix is published. How to fix ↓
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Background
The rediff package is an npm library that is commonly used for various functionalities in JavaScript applications. It is designed to facilitate specific tasks within the npm ecosystem. However, it has recently been identified as compromised, making it a significant security risk for developers and organizations utilizing this package.
Vulnerability Detail
The vulnerability stems from a malicious code injection attributed to the Sha1-Hulud: The Second Coming NPM worm. This worm is capable of stealing tokens and credentials, publishing them to GitHub, and propagating itself to other npm packages owned by the user. Additionally, it can establish persistence through GitHub actions and may even destroy the user's home directory. Any system running this package is considered fully compromised, necessitating immediate action.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall rediffIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, if you must continue using the rediff package temporarily, consider isolating your environment and ensuring that sensitive information is not accessible from the compromised system. However, this is not a long-term solution, and removal of the package is strongly recommended.
Conclusion
The rediff package has been compromised, leading to severe security implications for any systems using it. Immediate removal of the package and rotation of sensitive credentials is essential to mitigate risks. Continuous monitoring for vulnerabilities is recommended.
See every vulnerability recorded for rediff →
FAQ
The rediff package is an npm library used in JavaScript applications for various functionalities. It has been compromised, posing a security risk.
The malicious code can steal sensitive tokens and credentials, propagate to other npm packages, and potentially destroy your home directory.
Immediately uninstall the rediff package and rotate any secrets or keys stored on the affected computer.
Currently, there is no patched version available. The best course of action is to remove the package entirely.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
