Malicious Code Exfiltration in http-notifier-test Package

http-notifier-test Updated 09 Feb 2026

Summary

09/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-814: Malicious code in http-notifier-test (PyPI). Affects http-notifier-test versions 1.0.0. No fix is published. How to fix ↓

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Background

The http-notifier-test package is a Python library available on PyPI that is intended for testing HTTP notifications. However, it has been identified as containing malicious code that exfiltrates sensitive information from the host system. This vulnerability poses a risk to users who install or import this package, as it can lead to unauthorized data access.

Vulnerability Detail

The vulnerability originates from the package's design, which overrides the install command in setup.py to execute malicious code during installation. This code is capable of exfiltrating basic information about the host, such as the IP address and username. The malicious behavior is triggered upon installation, making it a significant risk for users who may unknowingly install the package, believing it to be benign.

How To Fix

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

pip uninstall http-notifier-test

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a precautionary measure, avoid installing the http-notifier-test package until a secure version is released. If you have already installed it, you can remove it using the command: 'pip uninstall http-notifier-test'.

Conclusion

The http-notifier-test package contains malicious code that poses a risk to users by exfiltrating sensitive information. It is crucial to avoid installing this package and to uninstall it if already present. Monitoring tools like Vulert can help keep track of vulnerabilities in open-source software.

See every vulnerability recorded for http-notifier-test →

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FAQ

http-notifier-test is a Python package designed for testing HTTP notifications, but it has been compromised with malicious code.

The malicious code can exfiltrate basic information such as the host's IP address and username.

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

Currently, the only version identified with this vulnerability is 1.0.0. Users should refrain from using this package until a secure version is released.

If you have installed the http-notifier-test package, you should uninstall it immediately using the command: 'pip uninstall http-notifier-test'.

How To Fix

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

pip uninstall http-notifier-test

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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