Malicious Code Injection in ttsflow Package: A Critical Vulnerability

ttsflow Updated 22 Oct 2026

Summary

22/10/2026
CRITICAL
No i
Critical
Not published

MAL-2026-18170: Malicious code in ttsflow (PyPI). Affects ttsflow versions 0.1.0. No fix is published. How to fix ↓

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Background

The ttsflow package, available on PyPI, is designed for voice synthesis applications, allowing developers to integrate text-to-speech functionalities into their projects. However, it has been identified as part of a coordinated campaign that enables the execution of remote malicious scripts, posing significant security risks to users and their applications.

Vulnerability Detail

The vulnerability originates from a malicious campaign identified by the source 'kam193', which involves loader packages that execute code from a specified URL. This vulnerability does not contain the malicious payload within the package itself but serves as a conduit for executing harmful scripts remotely. The implications of this vulnerability include potential data theft, unauthorized access, and the execution of arbitrary code on user systems, which can lead to severe security breaches.

How To Fix

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

pip uninstall ttsflow

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

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Workaround

As a temporary workaround, users can avoid using the ttsflow package until a patch is confirmed. Additionally, consider implementing network security measures to block unauthorized script execution from unknown URLs.

Conclusion

The ttsflow package has been identified as part of a malicious campaign that allows for remote code execution. Users are strongly advised to update to the latest version to protect their applications from potential threats. Regular monitoring and security practices are essential to maintain the integrity of your software.

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FAQ

The ttsflow package is a Python library designed for integrating text-to-speech functionalities into applications, enabling developers to convert text into spoken words.

This vulnerability allows malicious scripts to be executed remotely, which can compromise your application's security, leading to data breaches or unauthorized access.

If you have installed ttsflow, you should immediately update to the latest version using 'pip install --upgrade ttsflow' to mitigate the risk.

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

Failing to address this vulnerability can lead to severe consequences, including data theft, unauthorized access to sensitive information, and potential damage to your application's integrity.

How To Fix

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

pip uninstall ttsflow

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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