Malware in flat-cache
Malware was discovered in the flat-cache npm package. Systems with the package installed or running are considered fully compromised, with potential for complete system takeover and credential theft.
- Disclosed
- Last updated
- Blast radius
- Any system with flat-cache installed or running
- Ecosystems
- Attack vectors
- Affected entities
- flat-cachenpm package
A malware incident was identified in the flat-cache npm package. According to the GitHub advisory, any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate action: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. While the malicious 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\nThe scope of impact extends to any system where flat-cache was installed or executed, making this a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- flat-cache
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the flat-cache package from all affected systems
- Conduct a full security audit of any system that had flat-cache installed
- Monitor affected systems for signs of unauthorized access or persistence mechanisms
- Consider the affected system(s) potentially compromised and plan for full rebuild if critical infrastructure
Sources
- GitHub Advisory GHSA-8jxr-wprf-45g8 · GitHub Advisory Database
Cite this entry
"Malware in flat-cache." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 4, 2026; last updated August 4, 2026. https://supplychainattack.org/incident/malware-in-flat-cache-i81v2w
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