Malware in express-timer
Malware discovered in the npm package express-timer. Any computer with this package installed or running should be considered fully compromised and all secrets and keys rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with express-timer installed or running is considered fully compromised
- Ecosystems
- Attack vectors
- Affected entities
- express-timer
The npm package express-timer has been identified as containing malware. According to the GitHub Advisory (GHSA-9vgr-cqvw-qwhx), any computer that has 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 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 package installation, given that the outside entity may have gained full control of the system.\n\nThis is a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- express-timer
Remediation
- Immediately remove the express-timer 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 possible
- Audit all systems that may have been affected by this package
Sources
- GitHub Advisory GHSA-9vgr-cqvw-qwhx · GitHub Advisory Database
Cite this entry
"Malware in express-timer." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 27, 2026; last updated July 27, 2026. https://supplychainattack.org/incident/malware-in-express-timer-14js07
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