Malware in base58-core
Malware was discovered in the npm package base58-core. Systems with the package installed or running 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
- base58-corenpm package
The npm package base58-core was found to contain malware. According to the GitHub advisory (GHSA-3439-q8cv-mg5v), 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 package in the npm ecosystem.
Indicators of compromise
- Packages
- base58-core
Remediation
- Immediately isolate any system that has base58-core installed or running
- Rotate all secrets, API keys, and cryptographic keys from a different, uncompromised computer
- Remove the base58-core package from all affected systems
- Perform a full security audit and malware scan on affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected system(s) potentially fully compromised and plan for complete rebuild if critical infrastructure
Sources
- GitHub Advisory GHSA-3439-q8cv-mg5v · GitHub Advisory Database
Cite this entry
"Malware in base58-core." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 7, 2026; last updated July 7, 2026. https://supplychainattack.org/incident/malware-in-base58-core-8bafwv
Suggest a correction
Found an error or have a newer source? Corrections to factual errors take priority over new entries.
Related incidents
- resolvedcritical
Malware in ulebkit
The npm package ulebkit contained malware that provided full system compromise to attackers. Any computer with the package installed or running should be considered fully compromised.
npmCompromised package - containedcritical
Malware in blastradar
Malware was discovered in the npm package blastradar, 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.
npmCompromised package - activecritical
Malware in sui-move-graphql
Malware was discovered in the npm package sui-move-graphql. Systems with this package installed or running should be considered fully compromised, requiring immediate rotation of all secrets and keys from a different computer.
npmCompromised package - containedcritical
Malicious code in runtime-health (npm)
The npm package runtime-health version 1.0.2 was identified as malicious by the OpenSSF Package Analysis project. The package executes commands associated with malicious behavior.
npmCompromised package