Malware in forge-jsx2
Malware discovered in the npm package forge-jsx2. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- forge-jsx2
The npm package forge-jsx2 has been identified as containing malware. According to the GitHub advisory, any computer with this package installed or running should be considered fully compromised.\n\nThe advisory warns that all secrets and keys stored on affected computers should 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 compromise.\n\nThis represents a critical supply chain attack through a compromised package in the npm ecosystem.
Indicators of compromise
- Packages
- forge-jsx2
Remediation
- Immediately isolate any system with forge-jsx2 installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the forge-jsx2 package from all affected systems
- Perform a full security audit and malware scan on compromised 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 had elevated privileges or access to sensitive systems
Sources
- GitHub Advisory GHSA-hqj4-8wc5-r66r · GitHub Advisory Database
Cite this entry
"Malware in forge-jsx2." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 11, 2026; last updated June 11, 2026. https://supplychainattack.org/incident/malware-in-forge-jsx2-14szr1
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