Malware in bcs-mini
Malware was discovered in the npm package bcs-mini. Systems with this package installed are considered fully compromised and require immediate remediation including secret rotation and package removal.
- Disclosed
- Last updated
- Blast radius
- Any system with bcs-mini installed or running
- Ecosystems
- Attack vectors
- Affected entities
- bcs-mini
A malware incident was identified in the npm package bcs-mini, published as GitHub Advisory GHSA-9q3f-qc6p-62mm on August 14, 2026.\n\nAny computer with bcs-mini installed or running should be considered fully compromised. The advisory recommends immediate rotation of all secrets and keys from a different, unaffected computer.\n\nWhile removal of the package is advised, the advisory notes that full control of affected systems may have been granted to an external entity, meaning removal of the package alone may not eliminate all malicious software introduced by the installation.\n\nUsers should treat affected systems as potentially fully compromised and take appropriate incident response measures.
Indicators of compromise
- Packages
- bcs-mini
Remediation
- Immediately rotate all secrets and keys stored on affected systems from a different, unaffected computer
- Remove the bcs-mini package from all affected systems
- Conduct a full security audit and forensic analysis of any system that had bcs-mini installed
- Monitor affected systems for signs of persistent compromise or lateral movement
- Consider rebuilding affected systems from clean media if full compromise is suspected
Sources
- GitHub Advisory GHSA-9q3f-qc6p-62mm · GitHub Advisory Database
Cite this entry
"Malware in bcs-mini." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 14, 2026; last updated August 14, 2026. https://supplychainattack.org/incident/malware-in-bcs-mini-11cfr4
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