Malicious Code Exploit in light_tiger_z3n: A Threat to npm Ecosystem
Summary
MAL-2025-105127: Malicious code in light_tiger_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The package light_tiger_z3n is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been linked to a series of malicious activities aimed at inflating developer reputation scores. The presence of such malicious packages poses a significant risk to developers and users who rely on npm for secure and reliable software components.
Vulnerability Detail
The vulnerability in light_tiger_z3n originates from its design to include autopublish scripts that automatically generate and publish derivative packages with randomized names. This malicious behavior modifies the package.json file to remove private flags, alters version numbers, and continuously republishes variants, leading to pollution of the npm registry. The ramifications include potential security risks for users who may unknowingly install these compromised packages, as well as damage to the integrity of the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall light_tiger_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, you can avoid using the light_tiger_z3n package and replace it with a trusted alternative. Additionally, consider using tools like Vulert to monitor your package-lock.json for vulnerabilities in real-time.
Conclusion
The light_tiger_z3n package poses a significant threat due to its malicious behavior aimed at manipulating the npm ecosystem. It is crucial for developers to be aware of such vulnerabilities and take immediate action to protect their projects. Regular monitoring and updates are essential to maintaining a secure development environment.
See every vulnerability recorded for light_tiger_z3n →
FAQ
light_tiger_z3n is an npm package that has been identified as malicious, associated with the tea.xyz token reward campaign.
The vulnerability can lead to the installation of compromised packages, which may introduce security risks and affect the integrity of your project.
You should uninstall the package immediately using the command: npm uninstall light_tiger_z3n.
Yes, tools like Vulert can monitor your package-lock.json for vulnerabilities in real-time without requiring code access or installation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
