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Malware in animatecss-postcss-plugin

Malware discovered in the npm package animatecss-postcss-plugin. Systems with this package installed are considered fully compromised and require immediate remediation.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
Attack vectors
Affected entities
  • animatecss-postcss-plugin

A malware incident has been identified in the npm package animatecss-postcss-plugin. According to the GitHub Advisory (GHSA-p6ch-cw7w-ff5c), 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. 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 package compromise.\n\nThis represents a critical supply chain attack through a compromised npm package with potential for complete system compromise.

Indicators of compromise

Packages
  • animatecss-postcss-plugin

Remediation

  • Immediately isolate any system with animatecss-postcss-plugin installed from the network
  • Rotate all secrets, API keys, and credentials from a different, uncompromised computer
  • Remove the animatecss-postcss-plugin package from all systems
  • Perform a full security audit and malware scan of affected systems
  • Review system logs and network traffic for signs of unauthorized access or data exfiltration
  • Consider full system reimaging if complete compromise is suspected

Sources

  1. GitHub Advisory GHSA-p6ch-cw7w-ff5c · GitHub Advisory Database

Cite this entry

"Malware in animatecss-postcss-plugin." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 2, 2026; last updated July 2, 2026. https://supplychainattack.org/incident/malware-in-animatecss-postcss-plugin-1veieq

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