Malware in jscrambler-metro-plugin
Malware was discovered in the npm package jscrambler-metro-plugin. Systems with this package installed or running are considered fully compromised, with potential for complete system takeover.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- jscrambler-metro-plugin
A critical malware incident was identified in the npm package jscrambler-metro-plugin. According to the GitHub Advisory (GHSA-v442-7fpg-636g), 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 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 package installation, given the potential for complete system compromise.\n\nAffected users should treat their systems as potentially under the control of an external entity and take appropriate incident response measures."
Indicators of compromise
- Packages
- jscrambler-metro-plugin
Remediation
- Immediately isolate affected systems from the network
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Remove the jscrambler-metro-plugin package
- Perform a full forensic analysis and malware scan of affected systems
- Consider full system reimaging if compromise is confirmed
- Review system logs and access logs for signs of unauthorized activity
Sources
- GitHub Advisory GHSA-v442-7fpg-636g · GitHub Advisory Database
Cite this entry
"Malware in jscrambler-metro-plugin." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 15, 2026; last updated July 15, 2026. https://supplychainattack.org/incident/malware-in-jscrambler-metro-plugin-1objto
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