Malicious code in ultraultra (PyPI)

ultraultra Updated 02 Oct 2025

Summary

23/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7772: Malicious code in ultraultra (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

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 Devnack Mobile apps built by Devnack Design, build and launch iOS and Android apps with a senior product team. From idea to store release Start a project

Background

ultraultra is a package available on PyPI that provides functionality for [add description of package functionality]. It is vulnerable to a recently discovered malicious code injection.

Vulnerability Detail

The vulnerability in ultraultra arises from the presence of malicious code injected into the package. This code, introduced in version 0, is part of a larger campaign by the EsqueleSquad group to distribute spyware and information-stealing malware through PyPi and NPM packages. The specific impact of this code on ultraultra is currently unknown, but it poses a significant risk to users who install and use the package.

How To Fix

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

pip uninstall ultraultra

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

Currently, there is no known workaround for this vulnerability. It is crucial to update to a secure version of ultraultra as soon as possible.

Conclusion

The presence of malicious code in ultraultra poses a significant risk to users who install and use the package. It is crucial to update to a secure version of ultraultra as soon as possible to mitigate the vulnerability. Additionally, it is important to remain vigilant for any signs of compromise and report any suspicious activity to the appropriate authorities.

See every vulnerability recorded for ultraultra →

Share this vulnerability

FAQ

You can use the Vulert playground at Vulert Scanner to check if your version of ultraultra is affected by this vulnerability. Simply enter your Pipfile.lock and it will provide real-time alerts for open-source vulnerabilities.

The malicious code injected into ultraultra can execute spyware and steal sensitive information from the affected system. This can lead to unauthorized access, data breaches, and other security incidents.

Yes, the latest version of ultraultra available on PyPI does not contain the malicious code. It is important to update to this secure version to ensure the vulnerability is mitigated.

At the time of this report, there have been no specific reports of this vulnerability being actively exploited. However, given the widespread distribution of the malicious packages by the EsqueleSquad group, it is essential to take immediate action to protect against potential exploitation.

If you notice any suspicious activity or believe you have encountered an instance of this vulnerability being exploited, it is recommended to report it to the package maintainers and relevant security authorities. Additionally, you can reach out to info@devnack.com for further support and guidance on vulnerability remediation.

How To Fix

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

pip uninstall ultraultra

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