Malware in npmjs_web3-util
Malware discovered in the npm package web3-util. Systems with this package installed are considered fully compromised and require immediate remediation including secret rotation and package removal.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- web3-utilnpm package
A malware-laden version of the npm package web3-util has been identified and published to npmjs. The package grants full control of affected systems to an outside entity.\n\nAny computer with this package installed or running should be considered fully compromised. All secrets and keys stored on affected systems must be rotated immediately from a different, uncompromised computer.\n\nWhile the malicious package should be removed, complete removal of all malicious software cannot be guaranteed due to the level of system compromise achieved by the malware.\n\nThis incident was disclosed via GitHub Advisory GHSA-qjvc-v9v6-xh96 on 2026-06-10.
Indicators of compromise
- Packages
- web3-util
Remediation
- Immediately rotate all secrets and keys from a different, uncompromised computer
- Remove the web3-util package from all affected systems
- Conduct a full security audit of any system that had this package installed
- Monitor affected systems for signs of persistent malware or backdoors
- Review access logs and network traffic from affected systems for indicators of compromise
Sources
- GitHub Advisory GHSA-qjvc-v9v6-xh96 · GitHub Advisory Database
Cite this entry
"Malware in npmjs_web3-util." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 10, 2026; last updated June 10, 2026. https://supplychainattack.org/incident/malware-in-npmjs-web3-util-qhbzvb
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