Malware in wellnpm
The npm package wellnpm contained malware that provided full system compromise to attackers. Any system with the 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
- wellnpm
The npm package wellnpm was found to contain malware. According to the GitHub Advisory (GHSA-2gh4-jhh2-625m), 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, the advisory notes that full control of the computer may have been given to an outside entity, meaning there is no guarantee that removing the package will remove all malicious software resulting from the installation.\n\nThis represents a critical supply chain attack through a malicious npm package with the potential for complete system compromise.
Indicators of compromise
- Packages
- wellnpm
Remediation
- Immediately rotate all secrets and keys stored on affected computers from a different, uncompromised system
- Remove the wellnpm package from all affected systems
- Assume full system compromise and conduct forensic analysis to identify any additional malicious software
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider rebuilding affected systems from clean media if full compromise is suspected
Sources
- GitHub Advisory GHSA-2gh4-jhh2-625m · GitHub Advisory Database
Cite this entry
"Malware in wellnpm." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 26, 2026; last updated June 29, 2026. https://supplychainattack.org/incident/malware-in-wellnpm-v4x3zo
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