Malware in calculate-helper
Malware discovered in the npm package calculate-helper. The package grants full system compromise to attackers and should be considered a critical threat to any system where it is installed or running.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- calculate-helper
The npm package calculate-helper has been identified as containing malware. According to the GitHub Advisory (GHSA-3cmh-x7h7-f97c), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate action: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. The package should be removed, though complete remediation cannot be guaranteed due to the potential for the malware to have established persistent access or additional backdoors on the system.\n\nThis is a critical supply chain incident affecting the npm ecosystem, with the potential to compromise any developer or system that has installed or executed this package.
Indicators of compromise
- Packages
- calculate-helper
Remediation
- Immediately remove the calculate-helper package from all systems
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Audit system logs for unauthorized access or activity
- Consider the affected system fully compromised and plan for complete rebuild if critical infrastructure
- Monitor for any persistence mechanisms or additional malware that may have been installed
Sources
- GitHub Advisory GHSA-3cmh-x7h7-f97c · GitHub Advisory Database
Cite this entry
"Malware in calculate-helper." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 23, 2026; last updated June 23, 2026. https://supplychainattack.org/incident/malware-in-calculate-helper-hji7s3
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