Malware in @bytemend/mfebus
Malware was discovered in the npm package @bytemend/mfebus. Systems with this package installed or running are considered fully compromised, with potential for complete system takeover.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- @bytemend/mfebus
A malware incident was identified in the npm package @bytemend/mfebus, published as GitHub Advisory GHSA-hfjj-fph3-hp6h on August 13, 2026.\n\nAccording to the advisory, any computer with this package installed or running should be considered fully compromised. The malware grants outside entities full control of affected systems.\n\nImmediate remediation requires rotating all secrets and keys from a different, uncompromised computer. While the package should be removed, complete removal of all malicious software cannot be guaranteed due to the level of system compromise.\n\nUsers should assume complete system compromise and take appropriate incident response measures.
Indicators of compromise
- Packages
- @bytemend/mfebus
Remediation
- Immediately rotate all secrets, keys, and credentials from a different, uncompromised computer
- Remove the @bytemend/mfebus package from all affected systems
- Conduct a full security audit and forensic analysis of any system that had this package installed
- Monitor affected systems for signs of persistent malware or unauthorized access
- Consider full system reimaging if complete compromise is suspected
Sources
- GitHub Advisory GHSA-hfjj-fph3-hp6h · GitHub Advisory Database
Cite this entry
"Malware in @bytemend/mfebus." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 13, 2026; last updated August 13, 2026. https://supplychainattack.org/incident/malware-in-bytemend-mfebus-13d91p
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