Malware in chai-mocks
Malware discovered in the npm package chai-mocks. 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 chai-mocks installed or running
- Ecosystems
- Attack vectors
- Affected entities
- chai-mocksnpm package
A malware incident has been identified in the npm package chai-mocks. According to the GitHub advisory (GHSA-5wqh-hxqx-c6j3), 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 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 complete system compromise.
Indicators of compromise
- Packages
- chai-mocks
Remediation
- Immediately rotate all secrets and keys from a different, uncompromised computer
- Remove the chai-mocks package from all affected systems
- Conduct a full security audit of any system that had chai-mocks installed
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical
- Review access logs and monitor for unauthorized activity on affected systems
Sources
- GitHub Advisory GHSA-5wqh-hxqx-c6j3 · GitHub Advisory Database
Cite this entry
"Malware in chai-mocks." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 8, 2026; last updated June 8, 2026. https://supplychainattack.org/incident/malware-in-chai-mocks-bw7o1x
Suggest a correction
Found an error or have a newer source? Corrections to factual errors take priority over new entries.
Related incidents
- activecritical
Malware in @doaction/auth
Malware discovered in the npm package @doaction/auth. Systems with this package installed are considered fully compromised and require immediate remediation.
npmCompromised package - containedcritical
Malware in @doaction/shared
Malware was discovered in the npm package @doaction/shared. Systems with this package installed are considered fully compromised and require immediate remediation.
npmCompromised package - containedcritical
Malware in transacts
The npm package transacts was found to contain malware, resulting in full system compromise of any computer with the package installed or running. All secrets and keys should be rotated immediately from a different computer, and the package should be removed.
npmCompromised package - containedcritical
Malware in buffer-utilities
Malware was discovered in the npm package buffer-utilities, resulting in full system compromise for any installation. The package should be removed immediately and all secrets and keys rotated from a clean system.
npmCompromised package