Malware in polyprompt
Malware was discovered in the npm package polyprompt, 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
- polypromptnpm package containing malware
The npm package polyprompt was found to contain malware. According to the GitHub Advisory (GHSA-h574-ghq2-gh4p), any computer that has this package installed or running should be considered fully compromised.\n\nAffected users are advised to rotate all secrets and keys stored on compromised computers immediately, using a different, unaffected computer to perform the rotation. While the malicious 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\nThe advisory was published on 2026-07-31 via the GitHub Advisory database.
Indicators of compromise
- Packages
- polyprompt
Remediation
- Immediately rotate all secrets, API keys, and credentials stored on any computer that had polyprompt installed, using a different unaffected computer
- Remove the polyprompt package from all systems
- Perform a full security audit and malware scan on any system that had the package installed
- Review system logs and access logs for any unauthorized activity during the period the package was installed
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-h574-ghq2-gh4p · GitHub Advisory Database
Cite this entry
"Malware in polyprompt." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 31, 2026; last updated July 31, 2026. https://supplychainattack.org/incident/malware-in-polyprompt-ahha5o
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