postcss-animatecss (npm) · Malicious Code
Affects postcss-animatecssSource GCVE Database
Malicious package : remove postcss-animatecss and rotate any secrets on hosts that installed it.
Data as of 14 Jul 2026, 09:31 UTC
Malicious package
Published to npm · OSV MAL-2026-10539
What to do
Remove postcss-animatecss from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmpostcss-animatecss | Affected
| Fixed in– |
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Description
The postcss-animatecss npm package versions 1.0.1 and 1.0.2 contain malicious code that executes arbitrary Node.js commands on developer or CI hosts. The package includes an obfuscated payload that fetches and executes remote code every 4 seconds, establishing a persistent command-and-control channel. This behavior leaks consumer plugin configuration data to the attacker and is unrelated to the package's intended functionality.