Malware in clsx-tailwind
Malware was discovered in the npm package clsx-tailwind. Systems with this package installed are considered fully compromised and require immediate remediation including secret rotation and package removal.
- Disclosed
- Last updated
- Blast radius
- Any system with clsx-tailwind installed or running
- Ecosystems
- Attack vectors
- Affected entities
- clsx-tailwindnpm package containing malware
The npm package clsx-tailwind was found to contain malware. According to the GitHub Advisory (GHSA-373j-j35f-q4gx), any computer with this package installed or running should be considered fully compromised.\n\nImmediate action is required: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. The malicious package should be removed, though complete removal of all malicious artifacts cannot be guaranteed due to the potential for full system compromise.\n\nUsers should assume that an outside entity may have gained full control of affected systems during the package installation period.
Indicators of compromise
- Packages
- clsx-tailwind
Remediation
- Immediately rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the clsx-tailwind package from all affected systems
- Conduct a full security audit of any system that had this package installed
- Review system logs and access patterns for signs of unauthorized activity
- Consider full system reimaging if the system handles sensitive data or credentials
Sources
- GitHub Advisory GHSA-373j-j35f-q4gx · GitHub Advisory Database
Cite this entry
"Malware in clsx-tailwind." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 11, 2026; last updated June 11, 2026. https://supplychainattack.org/incident/malware-in-clsx-tailwind-1eva5y
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