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containedcritical

Malware in chai-as-const

Malware was discovered in the npm package chai-as-const. Systems with this package installed are considered fully compromised and require immediate remediation.

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Disclosed
Last updated
Blast radius
Any system with chai-as-const installed or running
Ecosystems
npm
Attack vectors
Compromised package
Affected entities
  • chai-as-const

The npm package chai-as-const was found to contain malware. According to the GitHub Advisory (GHSA-c2cc-6c6f-8qrp), any computer with 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 malicious 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 impact to all users and systems that have installed or executed this package.

Indicators of compromise

Packages
  • chai-as-const

Remediation

  • Immediately isolate any system that has installed or run chai-as-const
  • Rotate all secrets, API keys, and credentials from a different, uncompromised computer
  • Remove the chai-as-const package from all affected systems
  • Conduct a full security audit and malware scan of affected systems
  • Review system logs and network traffic for signs of unauthorized access or data exfiltration
  • Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical systems are involved

Sources

  1. GitHub Advisory GHSA-c2cc-6c6f-8qrp · GitHub Advisory Database

Cite this entry

"Malware in chai-as-const." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 16, 2026; last updated July 16, 2026. https://supplychainattack.org/incident/malware-in-chai-as-const-okdm5s

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