Malware in @gocortexio/npmgremlinbox-linux-man-pages-copyleft
The npm package @gocortexio/npmgremlinbox-linux-man-pages-copyleft contains malware that grants full system compromise to attackers. Any system with this package installed should be considered fully compromised and all credentials rotated immediately.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- @gocortexio/npmgremlinbox-linux-man-pages-copyleft
The npm package @gocortexio/npmgremlinbox-linux-man-pages-copyleft has been identified as containing malware. According to the GitHub advisory, any computer that has this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately 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 initial compromise, given that the attacker may have gained full control of the system.\n\nThis incident was disclosed on 2026-07-20 via GitHub's advisory system.
Indicators of compromise
- Packages
- @gocortexio/npmgremlinbox-linux-man-pages-copyleft
Remediation
- Immediately isolate any system with this package installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the @gocortexio/npmgremlinbox-linux-man-pages-copyleft package
- Perform a full security audit and malware scan of affected systems
- Consider full system reimaging if the system contained sensitive data or credentials
- Review npm package dependencies to identify how this package was introduced
Sources
- GitHub Advisory GHSA-xjx5-pj89-q82h · GitHub Advisory Database
Cite this entry
"Malware in @gocortexio/npmgremlinbox-linux-man-pages-copyleft." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malware-in-gocortexio-npmgremlinbox-linux-man-pages-copyleft-xh1fyw
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