Malware in tailwindcss-merge
Malware was discovered in the npm package tailwindcss-merge, potentially compromising any system with the package installed. The advisory recommends treating affected systems as fully compromised and rotating all secrets and keys from a clean machine.
- Disclosed
- Last updated
- Blast radius
- Any system with the malicious package installed
- Ecosystems
- Attack vectors
- Affected entities
- tailwindcss-merge
A critical malware incident was identified in the npm package tailwindcss-merge. According to the GitHub Security Advisory (GHSA-m2xh-rw7p-69rx), 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 immediately from a different, uncompromised machine. While the malicious 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\nAffected users should assume complete system compromise and take appropriate defensive measures accordingly.
Indicators of compromise
- Packages
- tailwindcss-merge
Remediation
- Immediately rotate all secrets, API keys, and credentials from a clean, uncompromised machine
- Remove the tailwindcss-merge package from all affected systems
- Audit system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging or replacement if the system handles sensitive data
- Review and revoke any access tokens or credentials that may have been exposed
- Monitor affected systems for ongoing malicious activity
Sources
- GitHub Advisory GHSA-m2xh-rw7p-69rx · GitHub Advisory Database
Cite this entry
"Malware in tailwindcss-merge." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 11, 2026; last updated June 11, 2026. https://supplychainattack.org/incident/malware-in-tailwindcss-merge-1o5u6a
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