Malware in leo-streams
Malware was discovered in the npm package leo-streams. Any computer with this package installed or running should be considered fully compromised. All secrets and keys must be rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with leo-streams installed or running
- Ecosystems
- Attack vectors
- Affected entities
- leo-streams
The npm package leo-streams was found to contain malware. According to the GitHub Advisory (GHSA-h98v-2hwg-56fx), any computer that has this package installed or running should be considered fully compromised.\n\nImmediate action is required: all secrets and keys stored on affected computers should 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\nThis is a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- leo-streams
Remediation
- Immediately rotate all secrets and keys from a different, uncompromised computer
- Remove the leo-streams package from all affected systems
- Conduct a full security audit of any system that had leo-streams installed
- Review system logs for unauthorized access or modifications
- Consider full system reimaging if full compromise is suspected
- Monitor affected systems for signs of persistent malware
Sources
- GitHub Advisory GHSA-h98v-2hwg-56fx · GitHub Advisory Database
Cite this entry
"Malware in leo-streams." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 25, 2026; last updated June 29, 2026. https://supplychainattack.org/incident/malware-in-leo-streams-dc5v4z
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