Malware in @gocortexio/npmgremlinbox-polyform-small-business-1-0-0
The npm package @gocortexio/npmgremlinbox-polyform-small-business-1-0-0 contains malware that grants full system compromise to an outside entity. Any computer 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-small-business-1-0-0 · 1-0-0
A malicious npm package @gocortexio/npmgremlinbox-polyform-small-business-1-0-0 was published containing malware. According to the GitHub advisory, any computer that has this package installed or running should be considered fully compromised.
The advisory recommends that all secrets and keys stored on affected computers be rotated immediately 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, given that the attacker may have gained full control of the system.
The incident was disclosed on 2026-07-20 via GitHub's advisory system.
Indicators of compromise
- Packages
- @gocortexio/npmgremlinbox-polyform-small-business-1-0-0
Remediation
- Immediately isolate any computer that has installed or run this package from the network
- Rotate all secrets, API keys, credentials, and passwords from a different, uncompromised computer
- Remove the package @gocortexio/npmgremlinbox-polyform-small-business-1-0-0 from all systems
- Perform a full security audit and malware scan on affected systems
- Review system logs and access logs for any unauthorized activity during the period the package was installed
- Consider full system reimaging if the package was installed on production or sensitive systems
Sources
- GitHub Advisory GHSA-pj22-8328-xx6m · GitHub Advisory Database
Cite this entry
"Malware in @gocortexio/npmgremlinbox-polyform-small-business-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-small-business-1-0-0-148kfz
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