Malware in prettier-logger
The npm package prettier-logger contains malware that grants full control of affected systems. All systems with this package installed should be 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
- prettier-loggernpm package
The npm package prettier-logger has been identified as containing malware. According to the GitHub Advisory (GHSA-6wq6-hvcw-xmcx), any computer with this package installed or running should be considered fully compromised.\n\nThe malware provides an outside entity with full control of the affected system. The 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 initial compromise.\n\nThis is a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- prettier-logger
Remediation
- Immediately isolate any system with prettier-logger installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the prettier-logger package from all affected systems
- Perform a full security audit and malware scan of affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system rebuild if the system handles sensitive data or credentials
Sources
- GitHub Advisory GHSA-6wq6-hvcw-xmcx · GitHub Advisory Database
Cite this entry
"Malware in prettier-logger." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 6, 2026; last updated July 6, 2026. https://supplychainattack.org/incident/malware-in-prettier-logger-ibs1th
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