Critical Malicious Code Vulnerability in claude-token-updater Package
Summary
MAL-2025-190837: Malicious code in claude-token-updater (npm). Affects claude-token-updater versions 1.0.3. No fix is published. How to fix ↓
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Background
The claude-token-updater package is a Node.js library designed to facilitate the management and updating of tokens in applications. It is commonly used in environments where secure token handling is crucial. However, this package has been identified as containing malicious code, posing significant security risks to any system where it is installed.
Vulnerability Detail
The vulnerability stems from the presence of embedded malicious code within the claude-token-updater package. This code can compromise the entire system, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of the code means that any computer running this package should be considered fully compromised, necessitating immediate action to mitigate potential damage.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall claude-token-updaterIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
There are no effective workarounds for this vulnerability other than removing the package entirely. Ensure that your application does not rely on this package for any functionality moving forward.
Conclusion
The claude-token-updater package has been identified as containing malicious code that poses a significant security threat. Immediate removal of the package and rotation of any compromised secrets is essential to protect your system. Utilize tools like Vulert to monitor for vulnerabilities in your applications.
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FAQ
You should immediately uninstall the package and rotate any secrets or keys stored on the affected system.
You can use the Vulert playground at Vulert Scanner to check if your application is affected without any signup.
No, there is currently no patched version available for this package. The only solution is to remove it.
Failure to remove the package can lead to unauthorized access to sensitive information and potential control over your system by malicious actors.
Vulert uses the package-lock.json file to monitor and alert in real-time for open-source vulnerabilities in your software, ensuring you stay informed about potential risks.
References
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