Malicious Code Vulnerability in pefsas-notthedevs Package
Summary
MAL-2025-107021: Malicious code in pefsas-notthedevs (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
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The pefsas-notthedevs package is part of the npm ecosystem, often used for various JavaScript applications. It has been identified as part of a token reward campaign that exploits npm's publishing capabilities. This package, like others in the campaign, is designed to inflate developer reputation scores through the automatic generation and publishing of derivative packages.
Vulnerability Detail
The vulnerability originates from malicious code embedded in the pefsas-notthedevs package. This code modifies the package.json file by removing private flags, altering version numbers, and generating random package names. The intent is to continuously republish these variants, polluting the npm registry and potentially compromising the integrity of the ecosystem. The ramifications include loss of trust in the npm registry, potential security risks for applications relying on these packages, and the proliferation of unwanted packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall pefsas-notthedevsIf 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 remove the pefsas-notthedevs package from your project by executing: npm uninstall pefsas-notthedevs. This will prevent any malicious code from executing while you await a patched version.
Conclusion
The pefsas-notthedevs package contains malicious code that poses a significant risk to applications using it. It is crucial to take immediate action by updating or removing the package to safeguard your project from potential threats. Utilizing tools like Vulert can help maintain the security of your dependencies.
See every vulnerability recorded for pefsas-notthedevs →
FAQ
pefsas-notthedevs is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.
The malicious code modifies your package.json file and can lead to the automatic publication of unwanted packages, compromising your application's integrity.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground at Vulert Scanner.
If a patched version is not available, it is advisable to remove the package from your project until a secure version is released.
Regularly monitor your dependencies for vulnerabilities using tools like Vulert, and keep your packages updated to the latest secure versions.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
