Malware in tailwindcsssss
The npm package tailwindcsssss 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
- tailwindcsssssMalicious npm package
The npm package tailwindcsssss has been identified as containing malware. According to the GitHub Advisory (GHSA-6x93-j4j5-p856), 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 computer. 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 poisoning attack, as "tailwindcsssss" closely resembles the legitimate "tailwindcss" package.
Indicators of compromise
- Packages
- tailwindcsssss
Remediation
- Immediately isolate any system with tailwindcsssss installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the tailwindcsssss package from all systems
- Perform a full security audit and malware scan on affected systems
- Review system logs and access logs for signs of unauthorized activity during the period the package was installed
- Consider full system reimaging if full compromise is suspected
Sources
- GitHub Advisory GHSA-6x93-j4j5-p856 · GitHub Advisory Database
Cite this entry
"Malware in tailwindcsssss." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 30, 2026; last updated July 30, 2026. https://supplychainattack.org/incident/malware-in-tailwindcsssss-ab6at3
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