MalwarePublished 24 Oct 2026Updated 29 Oct 2026

overarch-windows-x64-yr (npm) · Malicious Code

Affects overarch-windows-x64-yrSource GCVE Database

Malicious package : remove overarch-windows-x64-yr and rotate any secrets on hosts that installed it.

Data as of 29 Oct 2026, 18:11 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-18248

What to do

Remove overarch-windows-x64-yr from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmoverarch-windows-x64-yr	Affected =2.0.0 =1.4.0 =1.5.0	Fixed in–

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Description

The npm package overarch-windows-x64-yr in versions 1.4.0, 1.5.0, and 2.0.0 is identified as malicious software. Although no direct malicious behaviors such as reading secrets, executing remote code, or opening backdoors were detected during installation or import, the package is considered fully compromising any computer on which it is installed or running. Immediate removal of the package and rotation of all secrets and keys from a different computer are strongly advised.

Impact

Any computer with the overarch-windows-x64-yr package installed or running should be considered fully compromised. This implies potential unauthorized access or control by an attacker. All secrets and keys stored on the compromised computer are at risk and must be rotated immediately from a separate, secure computer. Removal of the package alone does not guarantee elimination of all malicious software or persistence mechanisms introduced by the package.

Defensive guidance

Remove the overarch-windows-x64-yr package immediately from all affected systems. Rotate all secrets and keys stored on the compromised computers from a different, secure machine. Because full compromise is assumed, further forensic analysis and remediation may be necessary to ensure no residual malicious software remains.

Summary

The npm package overarch-windows-x64-yr versions 1.4.0, 1.5.0, and 2.0.0 has been flagged as malware by the GHSA malware source. Analysis found no lifecycle hooks or behaviors that directly perform network or shell activity, credential theft, or remote code execution at install or import time. Despite this, the package is considered to fully compromise any affected system, implying that it may contain or enable malicious payloads beyond initial static analysis. The recommendation is to treat any system with this package installed as fully compromised and to rotate all secrets and keys immediately from a clean environment.

References

Community reviews

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What to do

Affected software

Description

AI analysisMachine-generated, updated 29 Oct 2026, 18:11 UTC

Technical details

References

Community reviews