Critical Malicious Code Vulnerability in pbr-client Package
Summary
MAL-2025-5715: Malicious code in pbr-client (npm). Affects pbr-client versions >= 99.99.2. No fix is published. How to fix ↓
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Background
The pbr-client package is an npm library designed for client-side interactions with a specific backend service. It is commonly used in JavaScript applications to facilitate communication and data exchange. However, this package has been identified to contain embedded malicious code, posing significant security risks to any application that utilizes it.
Vulnerability Detail
The vulnerability stems from the presence of embedded malicious code within the pbr-client package. This code can compromise the security of any computer where the package is installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of this code means that simply removing the package may not eliminate all traces of the compromise, as full control of the affected system may have been granted to an external entity.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall pbr-clientIf 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 isolate the affected application from the network to prevent any potential data exfiltration while you work on removing the package and securing your system.
Conclusion
The pbr-client package has been identified as containing malicious code that poses a significant security risk. It is essential to remove the package immediately and take necessary precautions to secure your system. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the security of your applications.
See every vulnerability recorded for pbr-client →
FAQ
Immediately remove the pbr-client package from your project and rotate any secrets or keys stored on the affected system.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without requiring any signup.
Yes, you can isolate the application from the network to prevent unauthorized access while you address the vulnerability.
Failure to address this vulnerability could lead to unauthorized access to sensitive data, complete system compromise, and potential data breaches.
Detailed information can be found in the vulnerability report on GitHub and other security advisories related to the package.
