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Malware in neon-poly-utls

The npm package neon-poly-utls contains malware that grants full control of affected systems. Any computer with this package installed or running should be considered fully compromised.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
Attack vectors
Affected entities
  • neon-poly-utls

The npm package neon-poly-utls has been identified as containing malware. According to the GitHub Advisory (GHSA-3fwc-79pq-r47c), 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, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the initial compromise, given that the attacker may have gained full control of the system.\n\nUsers should treat any system that has run this package as potentially fully compromised and take appropriate incident response measures.

Indicators of compromise

Packages
  • neon-poly-utls

Remediation

  • Immediately remove the neon-poly-utls package from all systems
  • Rotate all secrets, keys, and credentials from a different, uncompromised computer
  • Treat any system that installed or ran this package as fully compromised
  • 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 rebuilding affected systems from clean media if full compromise is suspected

Sources

  1. GitHub Advisory GHSA-3fwc-79pq-r47c · GitHub Advisory Database

Cite this entry

"Malware in neon-poly-utls." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 30, 2026; last updated July 30, 2026. https://supplychainattack.org/incident/malware-in-neon-poly-utls-19g68i

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