Malware in yuinpm
The npm package yuinpm was found to contain malware, resulting in full system compromise of any computer with the package installed or running. All secrets and keys on affected systems should be rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with yuinpm installed or running
- Ecosystems
- Attack vectors
- Affected entities
- yuinpm
The npm package yuinpm has been identified as containing malware. According to the GitHub Advisory (GHSA-vpgm-qmgp-w4h4), any computer that has this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately from a different, uncompromised computer. While the package should be removed, the advisory notes that full control of the computer may have been given to an outside entity, meaning there is no guarantee that removing the package will remove all malicious software resulting from the installation.\n\nThis represents a critical supply chain attack through a malicious npm package with the potential to affect any developer or system that installed or executed the package.
Indicators of compromise
- Packages
- yuinpm
Remediation
- Immediately rotate all secrets, API keys, and credentials stored on affected systems from a different, uncompromised computer
- Remove the yuinpm package from all systems
- Audit system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical infrastructure
- Check npm audit logs and package.json files across your organization to identify all installations of yuinpm
- Monitor for any suspicious activity or unauthorized access attempts on accounts that may have been compromised
Sources
- GitHub Advisory GHSA-vpgm-qmgp-w4h4 · GitHub Advisory Database
Cite this entry
"Malware in yuinpm." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 23, 2026; last updated July 23, 2026. https://supplychainattack.org/incident/malware-in-yuinpm-gftf63
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