Malware in kecak256
The npm package kecak256 was compromised and contains malware. Any computer with this package installed or running should be considered fully compromised.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- kecak256
The npm package kecak256 has been identified as containing malware. According to the GitHub Advisory (GHSA-4vrf-wcrh-g5j5), 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 compromise.\n\nThis is a critical supply chain incident affecting the npm ecosystem, with potential for widespread impact given the nature of the compromise and the sensitive nature of systems that may depend on cryptographic libraries.
Indicators of compromise
- Packages
- kecak256
Remediation
- Immediately isolate any computer with kecak256 installed or running from the network
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Remove the kecak256 package from all affected systems
- Conduct a full security audit and malware scan of affected systems
- Review access logs and monitor for unauthorized activity on systems that had the package installed
- Consider the affected systems as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-4vrf-wcrh-g5j5 · GitHub Advisory Database
Cite this entry
"Malware in kecak256." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 9, 2026; last updated June 9, 2026. https://supplychainattack.org/incident/malware-in-kecak256-yk01ec
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