Malware in ts-linter-builders
The npm package ts-linter-builders contained malware that could fully compromise affected systems. Any computer with this package installed or running 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
- ts-linter-builders
The npm package ts-linter-builders was found to contain malware. According to the GitHub Advisory (GHSA-4g6m-jp93-p5x7), 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 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 package installation, as the attacker may have gained full control of the system.\n\nUsers should treat any system that had this package installed as potentially containing persistent malware and take appropriate containment and recovery measures.
Indicators of compromise
- Packages
- ts-linter-builders
Remediation
- Immediately remove the ts-linter-builders package from all affected systems
- Rotate all secrets, API keys, credentials, and signing keys from a clean, uncompromised computer
- Assume full system compromise and perform forensic analysis or complete system rebuild
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Monitor for any suspicious activity on accounts that may have been accessed from compromised systems
- Notify any services or systems that may have been accessed using credentials stored on affected machines
Sources
- GitHub Advisory GHSA-4g6m-jp93-p5x7 · GitHub Advisory Database
Cite this entry
"Malware in ts-linter-builders." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 14, 2026; last updated July 14, 2026. https://supplychainattack.org/incident/malware-in-ts-linter-builders-rye9h1
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