Malicious Code Injection in tea-osss-tepani Package: A Threat to npm Users
Summary
MAL-2025-166703: Malicious code in tea-osss-tepani (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 tea-osss-tepani package is part of the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. These packages are designed to manipulate developer reputation scores by automatically generating and publishing derivative packages with randomized names. The primary functionality of this package revolves around incentivizing developers through token rewards, but it has been compromised, posing a significant risk to users.
Vulnerability Detail
The vulnerability in the tea-osss-tepani package stems from its inclusion in a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can compromise the integrity of applications relying on these packages. The malicious payload is designed to inflate developer reputation scores fraudulently, making it a serious concern for the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall tea-osss-tepaniIf 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 prevent the installation of the affected package by using npm's package-lock.json to lock your dependencies. Additionally, consider using the following command to uninstall the package: npm uninstall tea-osss-tepani.
Conclusion
The tea-osss-tepani package poses a significant threat due to its malicious code designed to manipulate npm's ecosystem. Users are urged to remove the package and monitor their dependencies closely. Utilizing tools like Vulert can help in identifying and mitigating such vulnerabilities effectively.
See every vulnerability recorded for tea-osss-tepani →
FAQ
The tea-osss-tepani package is part of a token reward campaign that incentivizes developers through npm, but it has been identified as malicious.
This vulnerability can lead to the pollution of the npm registry, potentially compromising the integrity of your application and its dependencies.
You should uninstall the tea-osss-tepani package immediately and monitor for any updates or patches.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just package-lock.json. Check your application for vulnerabilities at Vulert Scanner.
Regularly audit your dependencies, keep them updated, and utilize tools like Vulert to monitor for vulnerabilities in real-time.
