Malware in authcascade
Malware was discovered in the npm package authcascade, resulting in full system compromise of any computer with the package installed or running. All affected systems should be considered fully compromised and all secrets and keys rotated immediately from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with authcascade installed or running
- Ecosystems
- Attack vectors
- Affected entities
- authcascade
A critical malware incident was identified in the npm package authcascade. According to the GitHub Advisory (GHSA-fx94-j779-7c6j), 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 computer. 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 compromised npm package with potential for widespread impact across all systems where authcascade was deployed.
Indicators of compromise
- Packages
- authcascade
Remediation
- Immediately isolate any computer with authcascade installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the authcascade package from all affected systems
- Perform a full security audit and malware scan on all affected systems
- Review access logs and monitor for unauthorized activity on systems that had authcascade installed
- Consider full system reimaging if compromise is suspected
Sources
- GitHub Advisory GHSA-fx94-j779-7c6j · GitHub Advisory Database
Cite this entry
"Malware in authcascade." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 16, 2026; last updated June 16, 2026. https://supplychainattack.org/incident/malware-in-authcascade-1jj45f
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