Malware in whs4_nmp
The npm package whs4_nmp contains malware that grants full system compromise to attackers. Any computer with this package installed or running should be considered fully compromised and all secrets and keys rotated immediately.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- whs4_nmp
The npm package whs4_nmp has been identified as containing malware. According to the GitHub Advisory (GHSA-4fw4-5853-rqf8), 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 system. 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 potential for complete system takeover.
Indicators of compromise
- Packages
- whs4_nmp
Remediation
- Immediately isolate any computer with whs4_nmp installed from the network
- Rotate all secrets, API keys, credentials, and cryptographic keys from a different, uncompromised computer
- Remove the whs4_nmp package from all systems
- Perform a full security audit and malware scan on affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if compromise is suspected
Sources
- GitHub Advisory GHSA-4fw4-5853-rqf8 · GitHub Advisory Database
Cite this entry
"Malware in whs4_nmp." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 7, 2026; last updated July 7, 2026. https://supplychainattack.org/incident/malware-in-whs4-nmp-181xwm
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