Malicious Code in tpstringmcstring (PyPI)

tpstringmcstring Updated 02 Oct 2025

Summary

25/02/2023

Disclosed on

CRITICAL

Severity

No i

Fix available

Critical

Severity

Not published

CVSS Score

MAL-2023-7612: Malicious code in tpstringmcstring (PyPI). Affected versions are not published. No fix is published. How to fix ↓

Free scan

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.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or Browse

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats

SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml

Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile

Javascript package-lock.json · yarn.lock · pnpm-lock.yaml

PHP composer.lock

Python poetry.lock · requirements.txt · Pipfile.lock

Go go.mod

Rust Cargo.lock

Ruby Gemfile.lock

Dart pubspec.lock

C/C++ conan.lock

Elixir mix.lock

Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Background

tpstringmcstring is a package available on PyPI that provides string manipulation functionality. It is commonly used in Python projects for tasks such as parsing and modifying strings. However, this package has been found to contain malicious code, making it a potential security risk for any project that includes it.

Vulnerability Detail

The tpstringmcstring package has been identified as part of a larger group of nearly 6000 malicious PyPi and NPM packages. These packages have been created by the EsqueleSquad group and are designed to execute spyware and information-stealing malware. The specific vulnerability in tpstringmcstring allows the execution of malicious code, which can lead to unauthorized access, data theft, and other malicious activities. This poses a significant risk to any project that includes this package.

How To Fix

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

pip uninstall tpstringmcstring

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

There is no known workaround for this vulnerability. It is essential to remove tpstringmcstring from your project and replace it with a trusted alternative.

Conclusion

The presence of malicious code in tpstringmcstring poses a significant security risk to any project that includes it. It is crucial to remove this package from your project's dependencies and find a trusted alternative. Regularly reviewing and updating your project's dependencies, as well as using tools like Vulert, can help ensure your software is free from known vulnerabilities. For further support on vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for tpstringmcstring →