Malware in fpjson-lang
The npm package fpjson-lang was found to contain malware. Systems with this package installed or running should be considered fully compromised, requiring immediate rotation of all secrets and keys from a separate machine.
- Disclosed
- Last updated
- Blast radius
- Any system with fpjson-lang installed or running
- Ecosystems
- Attack vectors
- Affected entities
- fpjson-langnpm package containing malware
The npm package fpjson-lang has been identified as containing malware. According to the GitHub Advisory (GHSA-vhjh-rmpr-mcqm), any computer with this package installed or running should be considered fully compromised.\n\nImmediate action is required: all secrets and keys stored on affected computers must be rotated immediately from a different, uncompromised machine. 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 package installation, as the attacker may have gained full control of the system.\n\nAffected users should assume complete system compromise and take appropriate incident response measures.
Indicators of compromise
- Packages
- fpjson-lang
Remediation
- Immediately rotate all secrets, API keys, and credentials from a separate, uncompromised computer
- Remove the fpjson-lang package from all affected systems
- Conduct a full security audit and forensic analysis of any system that had fpjson-lang installed
- Monitor affected systems for signs of persistent malware or unauthorized access
- Review and revoke any credentials or access tokens that may have been exposed
- Consider full system reimaging if complete compromise is suspected
Sources
- GitHub Advisory GHSA-vhjh-rmpr-mcqm · GitHub Advisory Database
Cite this entry
"Malware in fpjson-lang." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 13, 2026; last updated July 13, 2026. https://supplychainattack.org/incident/malware-in-fpjson-lang-ta3bho
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