Malware in react-fast-refresh-helper
Malware was discovered in the npm package react-fast-refresh-helper. 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
- react-fast-refresh-helper
A malicious package named react-fast-refresh-helper was published to npm and contains malware. Any computer that has this package installed or running should be considered fully compromised.\n\nThe malware grants full control of the affected system to an outside entity. Removal of the package alone may not eliminate all malicious software that was installed as a result of the compromise.\n\nImmediate action is required: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. The package should be removed, though complete remediation may require additional investigation and system hardening.
Indicators of compromise
- Packages
- react-fast-refresh-helper
Remediation
- Immediately remove the react-fast-refresh-helper package from all systems
- Rotate all secrets, API keys, credentials, and signing keys from a different, uncompromised computer
- 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
- Audit all systems that may have been accessed using credentials stored on compromised machines
Sources
- GitHub Advisory GHSA-p32r-hmph-46qm · GitHub Advisory Database
Cite this entry
"Malware in react-fast-refresh-helper." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 30, 2026; last updated July 30, 2026. https://supplychainattack.org/incident/malware-in-react-fast-refresh-helper-0ybje3
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