Malware in polymarket-clob-api
Malware was discovered in the npm package polymarket-clob-api, resulting in full system compromise for any computer with the package installed or running. All secrets and keys on affected systems should be rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- polymarket-clob-api
A critical malware incident was identified in the npm package polymarket-clob-api. The GitHub Security Advisory (GHSA-95f6-59wp-jpv8) indicates that any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate rotation of all secrets and keys stored on affected computers from a different, uncompromised system. While the package should be removed, the advisory notes that full control of the computer may have been given to an outside entity, meaning removal of the package alone may not eliminate all malicious software that resulted from the installation.\n\nThis represents a supply chain attack through a compromised npm package with severe implications for system security and data confidentiality.
Indicators of compromise
- Packages
- polymarket-clob-api
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the polymarket-clob-api package from all affected systems
- Perform a full security audit and malware scan on any system that had the package installed
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-95f6-59wp-jpv8 · GitHub Advisory Database
Cite this entry
"Malware in polymarket-clob-api." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 11, 2026; last updated June 11, 2026. https://supplychainattack.org/incident/malware-in-polymarket-clob-api-1qf4to
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