Malware in @403name/fsevent
Malware discovered in the npm package @403name/fsevent. Systems with this package installed are considered fully compromised with potential for complete system control by an external entity.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- @403name/fsevent
The npm package @403name/fsevent has been identified as containing malware. According to the GitHub advisory, any computer with 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 system. 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 the potential for complete system compromise.\n\nAffected users should treat their systems as potentially under the control of an external entity and take appropriate security measures accordingly.
Indicators of compromise
- Packages
- @403name/fsevent
Remediation
- Immediately remove the @403name/fsevent package from all systems
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Assume full system compromise and conduct forensic analysis
- Consider the affected system(s) as potentially under external control and take appropriate containment measures
- Monitor for signs of unauthorized access or data exfiltration
Sources
- GitHub Advisory GHSA-hp95-92q5-xfvc · GitHub Advisory Database
Cite this entry
"Malware in @403name/fsevent." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 27, 2026; last updated July 27, 2026. https://supplychainattack.org/incident/malware-in-403name-fsevent-fzl8w9
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