Malicious Code Injection in optimistic_turtle-tool: A Threat to npm Users

optimistic_turtle-tool Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-106760: Malicious code in optimistic_turtle-tool (npm). 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

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.

Sponsored MarkAI Find prospects already talking about the problem you solve AI watches the communities your customers use to find qualified prospects, then alerts you when a conversation is worth joining. See MarkAI

Background

The optimistic_turtle-tool is an npm package that has been identified as part of a malicious campaign targeting the npm registry. This package is associated with the tea.xyz token reward initiative, which has led to the proliferation of various derivative packages. These packages are designed to inflate developer reputation scores through the automatic generation and publication of numerous variants, often with randomized names. The malicious nature of this package poses significant risks to developers and users alike, as it can lead to the pollution of the npm registry and compromise the integrity of software projects that depend on it.

Vulnerability Detail

The vulnerability in optimistic_turtle-tool stems from its malicious payload, which modifies the package.json file to remove private flags and alters version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to the npm registry. This behavior not only disrupts the integrity of the registry but also poses a risk of unintentional dependency on these malicious packages by developers who may unknowingly include them in their projects.

How To Fix

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

npm uninstall optimistic_turtle-tool

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, you can avoid using the optimistic_turtle-tool package altogether and look for alternative packages that provide similar functionality without the associated risks. Always verify the source and integrity of any package before including it in your project.

Conclusion

The optimistic_turtle-tool package poses a significant risk due to its malicious behavior, which can compromise the integrity of the npm registry and the projects that depend on it. It is crucial for developers to remain vigilant, regularly update their dependencies, and utilize tools like Vulert to monitor for vulnerabilities.

See every vulnerability recorded for optimistic_turtle-tool →

Share this vulnerability

FAQ

optimistic_turtle-tool is an npm package that has been identified as part of a malicious campaign aimed at inflating developer reputation scores through the automatic generation of derivative packages.

The vulnerability can lead to the pollution of the npm registry, potentially causing your project to depend on malicious packages without your knowledge, which can compromise security.

You should uninstall the optimistic_turtle-tool package immediately and review your project's dependencies for any other potentially compromised packages.

You can use tools like Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software by analyzing your package-lock.json file.

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

How To Fix

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

npm uninstall optimistic_turtle-tool

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 →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback