Malicious Code Vulnerability in anduril-sdk: Exfiltration of User Data

anduril-sdk Updated 23 Mar 2026

Summary

23/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-2083: Malicious code in anduril-sdk (PyPI). Affects anduril-sdk versions 1.0.0 – 1.0.1. No fix is published. How to fix ↓

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Background

The anduril-sdk is a Python package available on PyPI, designed for developers to integrate various functionalities into their applications. However, it has been identified to contain malicious code that attempts to exfiltrate user data during installation or import. This vulnerability poses a risk to users who may unknowingly install the package, as it can lead to unauthorized access to sensitive information.

Vulnerability Detail

The vulnerability originates from a malicious code embedded in the anduril-sdk package, specifically in versions 1.0.0 and 1.0.1. This code is designed to exfiltrate basic information such as the user's IP address and username, exploiting a dependency confusion tactic. The package masquerades as a legitimate tool for bug bounty programs, specifically targeting HackerOne users, which increases the risk of exploitation for those involved in security testing.

How To Fix

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

pip uninstall anduril-sdk

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

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Workaround

As a temporary measure, users should avoid using the anduril-sdk package until a secure version is released. Additionally, consider using alternative packages that provide similar functionalities without the associated risks.

Conclusion

The anduril-sdk package has been identified as containing malicious code that exfiltrates user data. Users are advised to uninstall the affected versions and monitor for any updates. It is crucial to remain vigilant when using open-source packages and to utilize tools like Vulert for real-time vulnerability monitoring.

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FAQ

anduril-sdk is a Python package designed for developers to integrate various functionalities into their applications, but it has been compromised with malicious code.

The vulnerability allows the package to exfiltrate sensitive user information, such as IP addresses and usernames, potentially leading to unauthorized access.

You should uninstall the package immediately using pip uninstall anduril-sdk and refrain from using it until a secure version is released.

Yes, consider using other packages that offer similar functionalities without the associated risks. Always verify the integrity of packages before installation.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software. You can check if your application is affected by this vulnerability using the Vulert playground at Vulert Scanner without any signup.

How To Fix

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

pip uninstall anduril-sdk

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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