Malware in internallib_v557
Malware discovered in the npm package internallib_v557. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- internallib_v557
A malicious npm package named internallib_v557 has been identified and published to the npm registry. The package contains malware that grants full control of affected systems to an outside entity.\n\nAny computer with this package installed or running should be considered fully compromised. The advisory recommends immediate rotation of all secrets and keys from a different, unaffected computer. While the package should be removed, complete removal of all malicious software cannot be guaranteed due to the level of system compromise.\n\nThis incident was disclosed via GitHub Advisory GHSA-945p-4458-jg48 on 2026-06-15.
Indicators of compromise
- Packages
- internallib_v557
Remediation
- Immediately identify all systems with internallib_v557 installed
- Rotate all secrets, API keys, and credentials from a different, unaffected computer
- Remove the internallib_v557 package from all affected systems
- Conduct a full security audit and forensic analysis of compromised systems
- Monitor affected systems for signs of persistent malware or backdoors
- Consider rebuilding affected systems from clean media if full compromise is suspected
Sources
- GitHub Advisory GHSA-945p-4458-jg48 · GitHub Advisory Database
Cite this entry
"Malware in internallib_v557." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 15, 2026; last updated June 16, 2026. https://supplychainattack.org/incident/malware-in-internallib-v557-15t5aj
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