Malware in typescript-base58
Malware was discovered in the npm package typescript-base58. 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
- typescript-base58npm package
The npm package typescript-base58 was found to contain malware. According to the GitHub Advisory (GHSA-rff8-755c-wqvw), any computer with 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, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the compromise.\n\nThis represents a critical supply chain attack through a compromised npm package with potential for complete system compromise.
Indicators of compromise
- Packages
- typescript-base58
Remediation
- Immediately isolate any system with typescript-base58 installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the typescript-base58 package from all affected systems
- Conduct a full forensic analysis of affected systems to identify any additional malicious software
- Review all access logs and audit trails for systems that had the package installed
- Consider the affected systems as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-rff8-755c-wqvw · GitHub Advisory Database
Cite this entry
"Malware in typescript-base58." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 7, 2026; last updated July 7, 2026. https://supplychainattack.org/incident/malware-in-typescript-base58-1kiujb
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