Malware in async-mutex-lock
Malware discovered in the npm package async-mutex-lock. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- async-mutex-lock
The npm package async-mutex-lock has been identified as containing malware. According to the GitHub advisory (GHSA-vwr9-j5fc-42fq), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate rotation of all secrets and keys from a different, uncompromised computer. 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 compromise.\n\nThis is a critical supply chain incident affecting the npm ecosystem, with potential for widespread impact across all systems that have installed or are running the affected package."
Indicators of compromise
- Packages
- async-mutex-lock
Remediation
- Immediately rotate all secrets and keys from a different, uncompromised computer
- Remove the async-mutex-lock package from all affected systems
- Conduct a full security audit of any system that had this package installed
- Review system logs for suspicious activity during the period the package was installed
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-vwr9-j5fc-42fq · GitHub Advisory Database
Cite this entry
"Malware in async-mutex-lock." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 5, 2026; last updated August 5, 2026. https://supplychainattack.org/incident/malware-in-async-mutex-lock-1ikkvl
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