Malware in date-format-helper2
Malware was discovered in the npm package date-format-helper2. Systems with this package installed or running should be considered fully compromised, requiring immediate rotation of all secrets and keys from a different computer.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- date-format-helper2
A malware-laden version of the npm package date-format-helper2 was identified and published to the npm registry. The advisory indicates that any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate action: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. While the package should be removed, the advisory notes that full control of the computer may have been given to an outside entity, meaning removal of the package alone may not eliminate all malicious software that resulted from installation.\n\nThis represents a critical supply chain compromise affecting npm users who installed or ran this package.
Indicators of compromise
- Packages
- date-format-helper2
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the date-format-helper2 package from all affected systems
- Conduct a full security audit of any system that had this package installed
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected system(s) potentially compromised and plan for full remediation or replacement
Sources
- GitHub Advisory GHSA-j29f-62x7-hj66 · GitHub Advisory Database
Cite this entry
"Malware in date-format-helper2." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 24, 2026; last updated June 24, 2026. https://supplychainattack.org/incident/malware-in-date-format-helper2-vph277
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