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Malware in @gleamkit/socket.io

Malware was discovered in the npm package @gleamkit/socket.io. Systems with this package installed or running are considered fully compromised, with potential for complete system takeover.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
Attack vectors
Affected entities
  • @gleamkit/socket.io

The npm package @gleamkit/socket.io was found to contain malware. According to the GitHub Advisory (GHSA-666h-5h3g-crf4), 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 initial compromise, given the potential for full system control by an outside entity.\n\nUsers should treat any system that has run this package as potentially fully compromised and take appropriate incident response measures.

Indicators of compromise

Packages
  • @gleamkit/socket.io

Remediation

  • Immediately remove the @gleamkit/socket.io package from all systems
  • Rotate all secrets, keys, and credentials from a different, uncompromised computer
  • Assume full system compromise and conduct thorough forensic analysis
  • Review system logs and network traffic for signs of unauthorized access or data exfiltration
  • Consider full system rebuild or replacement if the package was installed on production systems
  • Audit all systems that may have been affected by this compromise

Sources

  1. GitHub Advisory GHSA-666h-5h3g-crf4 · GitHub Advisory Database

Cite this entry

"Malware in @gleamkit/socket.io." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 13, 2026; last updated July 13, 2026. https://supplychainattack.org/incident/malware-in-gleamkit-socket-io-1i4cbf

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