Malware in plugin-fastify
Malware discovered in the npm package plugin-fastify. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with plugin-fastify installed or running
- Ecosystems
- Attack vectors
- Affected entities
- plugin-fastify
A critical malware incident was identified in the npm package plugin-fastify. According to the GitHub Advisory (GHSA-3g8q-cxq6-9f6c), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory indicates that the malicious package grants full control of affected systems to an outside entity. Immediate action is required to rotate all secrets and keys from a separate, 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 represents a critical supply chain attack through a compromised npm package with potential for widespread impact across all systems that have installed or executed this package.
Indicators of compromise
- Packages
- plugin-fastify
Remediation
- Immediately isolate any computer with plugin-fastify installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the plugin-fastify package from all affected systems
- Conduct a full forensic analysis of affected systems to identify any additional malicious software
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if compromise is confirmed
- Notify all users and stakeholders who may have been affected
Sources
- GitHub Advisory GHSA-3g8q-cxq6-9f6c · GitHub Advisory Database
Cite this entry
"Malware in plugin-fastify." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 10, 2026; last updated June 10, 2026. https://supplychainattack.org/incident/malware-in-plugin-fastify-1ce1l5
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