Malware in claude-token-tracker-mcp
The npm package claude-token-tracker-mcp contains malware that grants full control of affected systems. Any computer with this package installed or running should be considered fully compromised.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- claude-token-tracker-mcp
The npm package claude-token-tracker-mcp has been identified as containing malware. According to the GitHub Advisory (GHSA-w56m-5ch4-5xjw), 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\nUsers should treat any system that has run this package as potentially containing persistent malware and take appropriate incident response measures.
Indicators of compromise
- Packages
- claude-token-tracker-mcp
Remediation
- Immediately remove the claude-token-tracker-mcp package from all systems
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Perform a full security audit and malware scan of any affected systems
- Consider the affected systems as potentially fully compromised and plan for complete reimaging if critical systems are involved
- Review access logs and audit trails for any unauthorized activity on affected systems
Sources
- GitHub Advisory GHSA-w56m-5ch4-5xjw · GitHub Advisory Database
Cite this entry
"Malware in claude-token-tracker-mcp." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 16, 2026; last updated July 16, 2026. https://supplychainattack.org/incident/malware-in-claude-token-tracker-mcp-1bkv9x
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