Malware in @gocortexio/npmgremlinbox-eupl-1-2
The npm package @gocortexio/npmgremlinbox-eupl-1-2 contained malware that grants full system compromise to attackers. All affected systems should be considered fully compromised and all secrets rotated immediately.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- @gocortexio/npmgremlinbox-eupl-1-2
A malicious npm package @gocortexio/npmgremlinbox-eupl-1-2 was published containing malware. Any computer with this package installed or running should be considered fully compromised, with potential for complete system takeover by an outside entity.\n\nImmediate 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.\n\nThe incident was disclosed on 2026-07-20 via GitHub Security Advisory GHSA-7mf4-xph8-p3x5.
Indicators of compromise
- Packages
- @gocortexio/npmgremlinbox-eupl-1-2
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the @gocortexio/npmgremlinbox-eupl-1-2 package from all affected systems
- Perform a full security audit and malware scan of any system that had this package installed
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-7mf4-xph8-p3x5 · GitHub Advisory Database
Cite this entry
"Malware in @gocortexio/npmgremlinbox-eupl-1-2." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malware-in-gocortexio-npmgremlinbox-eupl-1-2-1j1b0l
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