Malware in @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0
A malicious npm package @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0 was published containing malware that grants full system compromise to attackers. Any system with this package installed should be considered fully compromised and all secrets and keys 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-polyform-noncommercial-1-0-0 · 1-0-0
A malicious npm package named @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0 was identified and published to the npm registry. The package contains malware that provides attackers with full control of any computer on which it is installed or executed.
According to the GitHub Security Advisory (GHSA-q9m9-5h2w-6fqv), any system with this package installed should be considered fully compromised. The advisory recommends immediate rotation of all secrets and keys stored on affected computers, performed from a different, uncompromised machine.
While removal of the package is recommended, the advisory notes that because the malware may have granted full control of the system to an outside entity, there is no guarantee that package removal alone will eliminate all malicious software that may have been installed as a result of the initial compromise.
The package has been identified and flagged through GitHub's security advisory system, allowing for detection and remediation by affected users.
Indicators of compromise
- Packages
- @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0
Remediation
- Immediately remove the @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0 package from all systems
- Rotate all secrets, API keys, credentials, and authentication tokens from a different, uncompromised computer
- 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 full system reimaging if the system contained sensitive data or had privileged access
- Audit npm dependencies in all projects to ensure no other malicious packages are present
Sources
- GitHub Advisory GHSA-q9m9-5h2w-6fqv · GitHub Advisory Database
Cite this entry
"Malware in @gocortexio/npmgremlinbox-polyform-noncommercial-1-0-0." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malware-in-gocortexio-npmgremlinbox-polyform-noncommercial-1-0-0-1mvo3u
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