Critical Malicious Code Vulnerability in @polystream/streaming Package
Summary
MAL-2025-193009: Malicious code in @polystream/streaming (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The @polystream/streaming package is a Node.js library designed for streaming applications, providing functionalities that facilitate real-time data transmission and processing. However, it has been identified as containing malicious code that compromises the security of any system where it is installed, making it a significant risk for developers and organizations relying on this package.
Vulnerability Detail
The vulnerability originates from the presence of embedded malicious code within the @polystream/streaming package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it could lead to data breaches and loss of control over the affected systems. The malicious nature of the code has been confirmed by security researchers, categorizing it under CWE-506, which pertains to products containing malicious code.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @polystream/streamingIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
Currently, there are no effective workarounds to mitigate the risks associated with the malicious code in the @polystream/streaming package. The only recommended action is to uninstall the package and secure your system.
Conclusion
The @polystream/streaming package has been identified as containing malicious code that poses a significant risk to any system where it is installed. Immediate action is required to remove the package and secure sensitive information. Regular monitoring for vulnerabilities is essential to maintain the security of your applications.
See every vulnerability recorded for @polystream/streaming →
FAQ
It is a Node.js library used for streaming applications, enabling real-time data transmission and processing.
The malicious code can fully compromise your system, allowing unauthorized access to sensitive information and control over your computer.
You should immediately uninstall the package and rotate any secrets or keys stored on the affected system.
No, there is currently no patched version available for the @polystream/streaming package.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file. You can also check if your application is affected by this vulnerability using the Vulert playground without any signup.
