Malware in @gocortexio/npmgremlinbox-malware-credential-harvesting
The npm package @gocortexio/npmgremlinbox-malware-credential-harvesting contains malware capable of credential harvesting. Systems with this package installed should be considered fully compromised and all secrets rotated immediately from a different machine.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- @gocortexio/npmgremlinbox-malware-credential-harvesting
A malicious npm package, @gocortexio/npmgremlinbox-malware-credential-harvesting, was identified and published to the npm registry. The package contains malware designed for credential harvesting.
Any computer that has installed or executed this package should be considered fully compromised. The malware may have granted outside entities full control of the affected system.
Immediate remediation requires rotating all secrets and keys from a different, 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 initial compromise.
This incident was disclosed via GitHub Advisory GHSA-89jh-h47r-j47w on 2026-07-20.
Indicators of compromise
- Packages
- @gocortexio/npmgremlinbox-malware-credential-harvesting
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the package @gocortexio/npmgremlinbox-malware-credential-harvesting from all systems
- Perform a full security audit and malware scan of any system that had this package installed
- Review system logs and network activity for signs of unauthorized access or data exfiltration
- Consider the affected system(s) compromised and plan for full rebuild if critical infrastructure
Sources
- GitHub Advisory GHSA-89jh-h47r-j47w · GitHub Advisory Database
Cite this entry
"Malware in @gocortexio/npmgremlinbox-malware-credential-harvesting." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malware-in-gocortexio-npmgremlinbox-malware-credential-harvesting-fq54ax
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