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
Suggest a correction
Found an error or have a newer source? Corrections to factual errors take priority over new entries.
Related incidents
- resolvedcritical
Malicious code in autbank-core (npm)
The npm package autbank-core contained malicious preinstall and postinstall lifecycle hooks that exfiltrated environment variables, credentials, and system information to a hardcoded webhook.site endpoint during installation.
npmCompromised package - resolvedcritical
Malicious code in adxaa (npm)
The npm package adxaa contained obfuscated malicious JavaScript designed to target users of a specific WordPress site. The payload exfiltrates session data, deletes accounts, and hijacks credentials via email overwrite and password reset.
npmCompromised package - resolvedcritical
Malicious code in upload-to-gcp (npm)
upload-to-gcp@3.2.1 (npm) contains malicious code in its postinstall script that exfiltrates host identifiers to an attacker-controlled endpoint. The package masquerades as a Google Cloud Platform utility but performs unauthorized telemetry collection at install time.
npmCompromised package - resolvedcritical
Malicious code in akamai-sensor (npm)
A malicious npm package named akamai-sensor impersonated Akamai's legitimate sensor_data anti-bot SDK. The package contained hidden JavaScript code concealed using invisible Unicode characters and implemented a dynamic command-and-control channel via a Google Calendar dead-drop, enabling arbitrary code execution on installation.
npmCompromised packageTyposquatting