Malicious Code Vulnerability in requests-core-plugin: Infostealer Threat Detected

requests-core-plugin Updated 10 Feb 2026

Summary

10/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-843: Malicious code in requests-core-plugin (PyPI). Affects requests-core-plugin versions 2.31.12 – 2.31.9. No fix is published. How to fix ↓

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Background

requests-core-plugin is a Python package available on PyPI that is designed to enhance the functionality of HTTP requests. It is commonly used in various applications for making network requests more efficient. However, a recent vulnerability has been identified that allows malicious code to be executed during installation, posing significant security risks to users.

Vulnerability Detail

The vulnerability originates from a malicious package version uploaded by the user 'kam193'. During the installation process, the package executes obfuscated code that downloads and runs an executable identified as malware. This malware is capable of stealing sensitive information, including browser data and Discord credentials. The malicious code overrides the install command in setup.py, ensuring that the harmful actions are executed without the user's consent or knowledge.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall requests-core-plugin

If 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, users can avoid using the requests-core-plugin package until a secure version is confirmed. Additionally, users should ensure their systems are protected with updated antivirus software to detect and remove any potential malware that may have been installed.

Conclusion

The requests-core-plugin package has been compromised with malicious code that poses a serious threat to user data. It is crucial for users to uninstall affected versions and upgrade to a secure version immediately. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.

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FAQ

The malicious code is obfuscated and designed to download and execute an executable that functions as an infostealer, collecting sensitive user data.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

If you have installed the affected package, you should uninstall it immediately and install a patched version to mitigate the risk.

Yes, versions 2.31.5 through 2.31.15 of requests-core-plugin are affected by this vulnerability.

Vulert monitors and alerts users in real-time for open-source vulnerabilities in software by analyzing the Pipfile.lock, ensuring that developers are aware of any potential threats.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall requests-core-plugin

If 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 →

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