Malware in tailwindcssss
The npm package tailwindcssss contains malware that grants full system compromise to attackers. Any system with this package installed should be considered fully compromised and all credentials rotated immediately from a different machine.
- Disclosed
- Last updated
- Blast radius
- Any system with the malicious package installed
- Ecosystems
- Attack vectors
- Affected entities
- tailwindcssssMalicious npm package
The npm package tailwindcssss has been identified as containing malware. According to the GitHub Advisory (GHSA-9x5x-r7x3-737h), 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 machine. 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 initial compromise, given that the attacker may have gained full control of the system.\n\nThis appears to be a typosquatting or direct package compromise attack, as "tailwindcssss" closely resembles the legitimate "tailwindcss" package.
Indicators of compromise
- Packages
- tailwindcssss
Remediation
- Immediately remove the tailwindcssss package from all affected 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 access logs and monitor for unauthorized activity on systems that were compromised
- Consider the affected systems as potentially fully compromised and plan for complete reimaging if critical systems are involved
Sources
- GitHub Advisory GHSA-9x5x-r7x3-737h · GitHub Advisory Database
Cite this entry
"Malware in tailwindcssss." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 30, 2026; last updated July 30, 2026. https://supplychainattack.org/incident/malware-in-tailwindcssss-11v8lx
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