MalwarePublished 7 Aug 2026

tailwindcss-motion-advanced (npm) · Malicious Code

Affects tailwindcss-motion-advancedSource GCVE Database

Malicious package : remove tailwindcss-motion-advanced and rotate any secrets on hosts that installed it.

Data as of 7 Aug 2026, 15:34 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13604

What to do

Remove tailwindcss-motion-advanced 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
npmtailwindcss-motion-advanced	Affected =1.0.1	Fixed in–

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Description

The npm package tailwindcss-motion-advanced version 1.0.1 contains malicious code that, upon requiring its main entry, queries Ethereum RPC endpoints to retrieve a transaction from a hardcoded attacker address. It extracts IP addresses from the transaction data, fetches an XOR-encoded JavaScript payload over plain HTTP from these IPs, decodes it, and executes it via eval and a detached Node.js process. The package masquerades as a Tailwind CSS plugin but performs unauthorized remote code execution with obfuscated strings and network activity unrelated to its stated purpose.

Impact

This malicious package enables remote code execution on any system that installs and requires it, potentially allowing attackers to run arbitrary code. The use of Ethereum blockchain data to dynamically determine C2 servers complicates detection and takedown. Execution of attacker-controlled payloads can lead to system compromise, data theft, or further malware deployment. There is no indication of active exploitation in the wild yet, but the risk is significant due to the nature of the code execution and obfuscation.

Defensive guidance

Users should immediately avoid installing or using this package version. Remove it from existing projects and replace it with trusted alternatives. Monitor dependency sources carefully and verify package integrity before use. Check vendor or repository advisories for updates or removal notices. Since this is a malicious package, remediation involves removing the package and scanning affected environments for signs of compromise.

Summary

The tailwindcss-motion-advanced npm package version 1.0.1 includes embedded malicious functionality. When loaded, it contacts multiple Ethereum RPC endpoints to fetch the latest outbound transaction from a specific hardcoded Ethereum address. It parses two IPv4 command-and-control (C2) hosts from the transaction's 'to' field, then retrieves an XOR-encoded JavaScript payload via HTTP from these hosts. The payload is decoded and executed both via eval and by spawning a detached Node.js process. Sensitive strings and identifiers are obfuscated using Unicode escapes and XOR decoding. This behavior is unrelated to the package's legitimate purpose as a Tailwind CSS plugin, indicating supply chain compromise or intentional malware.

References

npmjs.com/package/tailwindcss-motion-advanced/v/1.0.1 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 7 Aug 2026, 15:34 UTC

Technical details

References

Community reviews