Malware in tw-style-utils
Malware was discovered in the npm package tw-style-utils. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with tw-style-utils installed or running
- Ecosystems
- Attack vectors
- Affected entities
- tw-style-utils
The npm package tw-style-utils was found to contain malware. 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. The package should be removed, though complete removal of all malicious software cannot be guaranteed due to the potential for full system compromise.\n\nThis incident was disclosed on 2026-06-26 via GitHub Security Advisory GHSA-75cr-ggc5-8h7g.
Indicators of compromise
- Packages
- tw-style-utils
Remediation
- Immediately remove the tw-style-utils package from all systems
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Perform a full security audit and malware scan of any system that had this package installed
- Review system logs and network activity for signs of unauthorized access or data exfiltration
- Consider the affected system(s) as potentially fully compromised and plan for complete rebuild if critical infrastructure
Sources
- GitHub Advisory GHSA-75cr-ggc5-8h7g · GitHub Advisory Database
Cite this entry
"Malware in tw-style-utils." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 26, 2026; last updated June 29, 2026. https://supplychainattack.org/incident/malware-in-tw-style-utils-1c75pe
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