Malicious Code Exfiltration in @tvg-mar/promos-context Package
Summary
MAL-2026-16412: Malicious code in @tvg-mar/promos-context (npm). Affects @tvg-mar/promos-context versions 9.9.10. No fix is published. How to fix ↓
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Background
The @tvg-mar/promos-context package is an npm library designed for managing promotional contexts in applications. It is widely used in various projects for its functionality in handling promotional data. However, this package has been found to contain a serious vulnerability that allows malicious code to execute during installation, potentially compromising user data.
Vulnerability Detail
The vulnerability originates from the package's install lifecycle script, which executes 'node index.js'. This script dynamically loads core modules with obfuscated names and collects sensitive information such as the username and hostname. This data is then sent to a remote server via a DNS query, effectively exfiltrating user information without consent. The obfuscation techniques used make it difficult to detect the malicious behavior, posing significant risks to users who install this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @tvg-mar/promos-contextIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, avoid using the @tvg-mar/promos-context package until it has been patched. If you must use it, consider isolating the installation in a controlled environment to prevent potential data leakage.
Conclusion
The @tvg-mar/promos-context package contains a critical vulnerability that allows for the exfiltration of user data during installation. It is essential to update to the latest version to mitigate risks. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for @tvg-mar/promos-context →
FAQ
The vulnerability involves malicious code that exfiltrates user data during the package installation process.
You can use Vulert, which monitors open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without needing to sign up.
If you have installed the vulnerable version, immediately update to the latest patched version using 'npm install @tvg-mar/promos-context@latest'.
Regularly audit your dependencies and use tools like Vulert to monitor for vulnerabilities in your open-source packages.
Failing to address this vulnerability can lead to unauthorized access to sensitive user information, potentially resulting in data breaches and loss of user trust.
