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containedcritical

Malware in eth-util

Malware was discovered in the eth-util npm package. Any computer with this package installed or running should be considered fully compromised, with all secrets and keys requiring immediate rotation from a different system.

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Disclosed
Last updated
Blast radius
Any system with eth-util installed or running; all secrets and keys on affected systems are considered compromised.
Ecosystems
npm
Attack vectors
Compromised package
Affected entities
  • eth-utilnpm package

The eth-util npm package was found to contain malware. According to the GitHub Security Advisory (GHSA-fq6v-3gxv-7rjv), any system with this package installed or running should be treated as fully compromised.\n\nImmediate remediation requires rotating all secrets and keys stored on affected computers 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 compromise, given the potential for full system control to have been granted to an external entity.\n\nUsers should assume complete loss of confidentiality and integrity on any system where eth-util was present."

Indicators of compromise

Packages
  • eth-util

Remediation

  • Immediately rotate all secrets, keys, and credentials from a different, uncompromised computer
  • Remove the eth-util package from all affected systems
  • Conduct a full security audit and forensic analysis of any system that had eth-util installed
  • Review all activity and access logs on affected systems 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

Sources

  1. GitHub Advisory GHSA-fq6v-3gxv-7rjv · GitHub Advisory Database

Cite this entry

"Malware in eth-util." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 19, 2026; last updated June 20, 2026. https://supplychainattack.org/incident/malware-in-eth-util-18yzif

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