Critical RCE Vulnerability in test-agency-assign Package
Summary
MAL-2026-17295: Malicious code in test-agency-assign (npm). Affects test-agency-assign versions 1.0.4. No fix is published. How to fix ↓
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Background
The test-agency-assign package is an npm module that appears to be a wrapper with no functional content, designed to execute a malicious binary during installation. It lacks essential metadata such as a README, description, and author information, making it suspicious and potentially harmful.
Vulnerability Detail
The vulnerability originates from the package's postinstall script, which executes a bundled Windows executable (Kelimasow.exe) without user consent during the npm install process. This behavior allows for remote code execution (RCE) on any Windows machine that installs the package, posing significant security risks as it can lead to unauthorized access and control over the system.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall test-agency-assignIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, avoid using the test-agency-assign package altogether. If you must use it, consider isolating your environment (e.g., using Docker) to mitigate risks associated with executing untrusted code.
Conclusion
The test-agency-assign package poses a severe security risk due to its ability to execute malicious code on installation. Users are advised to uninstall this package and utilize tools like Vulert to monitor for vulnerabilities in their applications.
See every vulnerability recorded for test-agency-assign →
FAQ
The vulnerability allows for remote code execution by executing a malicious binary during the installation process.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without requiring signup.
If you have installed the test-agency-assign package, you should uninstall it immediately using the command: npm uninstall test-agency-assign.
No patches are available for the test-agency-assign package as it is recommended to remove the package entirely.
Failing to address this vulnerability can lead to unauthorized access, data breaches, and potential control over your system by malicious actors.
References
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