Critical Malicious Code Vulnerability in open-telemetry-mini-client Package

open-telemetry-mini-client Updated 06 Jan 2026

Summary

06/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-76: Malicious code in open-telemetry-mini-client (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The open-telemetry-mini-client is an npm package designed to facilitate the implementation of OpenTelemetry, a set of APIs and libraries for observability in software applications. This package allows developers to instrument their applications for tracing and monitoring. However, it has been compromised, leading to significant security concerns.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the open-telemetry-mini-client package. This code can fully compromise any computer that has the package installed or running, allowing an external entity to gain control over the system. All secrets and keys stored on the affected computer should be considered at risk and should be rotated immediately. The malicious code's origin is linked to a known malware source, and its impact is severe, as it can lead to unauthorized access and data breaches.

How To Fix

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

npm uninstall open-telemetry-mini-client

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

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Workaround

As a workaround, ensure that no instances of the open-telemetry-mini-client package are running. You can check your package-lock.json file for any references to this package and remove them. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The open-telemetry-mini-client package has been identified as containing malicious code that poses a significant security risk. Immediate action is required to remove the package and secure any compromised systems. Users are encouraged to utilize tools like Vulert for ongoing vulnerability monitoring.

See every vulnerability recorded for open-telemetry-mini-client →

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FAQ

Immediately remove the package and rotate any secrets or keys stored on the affected system.

You can use Vulert's playground at Vulert Scanner to check if your application is affected without needing to sign up.

Failure to address this vulnerability can lead to unauthorized access, data breaches, and potential loss of sensitive information.

Yes, using Vulert, you can monitor and receive alerts for open-source vulnerabilities in your software by analyzing your package-lock.json.

It is advisable to avoid using the open-telemetry-mini-client package until a thorough investigation and confirmation of its safety is provided by the maintainers.

How To Fix

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

npm uninstall open-telemetry-mini-client

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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