Malware in portway
Malware was discovered in the npm package portway, resulting in full system compromise for any installation. The package should be removed immediately and all secrets and keys rotated from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with portway installed or running
- Ecosystems
- Attack vectors
- Affected entities
- portwaynpm package
A critical malware incident was identified in the npm package portway. According to the GitHub Advisory (GHSA-j5q6-x29x-2v5x), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate action: all secrets and keys stored on affected computers should be rotated 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 removal of the package alone may not eliminate all malicious software that resulted from the installation.\n\nThis represents a critical supply chain attack through a compromised npm package with severe implications for system integrity and security.
Indicators of compromise
- Packages
- portway
Remediation
- Remove the portway package immediately from all systems
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Assume full system compromise and conduct forensic analysis
- Review system logs for unauthorized access or activity
- Consider full system rebuild if critical infrastructure or sensitive data is involved
- Monitor for any persistence mechanisms left by the malware
Sources
- GitHub Advisory GHSA-j5q6-x29x-2v5x · GitHub Advisory Database
Cite this entry
"Malware in portway." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 31, 2026; last updated August 1, 2026. https://supplychainattack.org/incident/malware-in-portway-19y43l
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