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Malware in @calm2026/imux

The npm package @calm2026/imux contains malware that grants full control of affected systems. Any computer with this package installed or running should be considered fully compromised.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
Attack vectors
Affected entities
  • @calm2026/imux

The npm package @calm2026/imux has been identified as containing malware. According to the GitHub Advisory (GHSA-vwgj-9938-7p8q), any computer that has this package installed or running should be considered fully compromised.\n\nThe advisory warns that all secrets and keys stored on affected computers should 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 initial compromise, given that the attacker may have gained full control of the system.\n\nThis is a critical supply chain incident affecting the npm ecosystem.

Indicators of compromise

Packages
  • @calm2026/imux

Remediation

  • Immediately remove the @calm2026/imux package from all systems
  • Rotate all secrets, keys, and credentials from a different, uncompromised computer
  • Assume full system compromise and conduct forensic analysis
  • Review system logs for unauthorized access or modifications
  • Consider rebuilding affected systems from clean media if full compromise is suspected

Sources

  1. GitHub Advisory GHSA-vwgj-9938-7p8q · GitHub Advisory Database

Cite this entry

"Malware in @calm2026/imux." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 9, 2026; last updated July 9, 2026. https://supplychainattack.org/incident/malware-in-calm2026-imux-p91dq0

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