MalwarePublished 5 Aug 2026Updated 6 Aug 2026

tailwindcss-scrollbar-hide (npm) · Malicious Code

Affects tailwindcss-scrollbar-hideSource GCVE Database

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

Data as of 6 Aug 2026, 18:37 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12224

What to do

Remove tailwindcss-scrollbar-hide 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-scrollbar-hide	Affected 0.0.1 – 2.3.0 4 affected builds	Fixed in–

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Description

The npm package tailwindcss-scrollbar-hide contains malicious code that executes an obfuscated payload upon import or require. This payload queries Ethereum public RPC endpoints and a blockchain explorer to retrieve attacker-controlled data, which it uses to dynamically fetch and execute further malicious code on the infected machine. The package masquerades as a zero-dependency CSS plugin but includes network communication, process spawning, and dynamic code execution with no legitimate purpose. Installing or running this package results in full system compromise, and secrets or keys on the affected machine should be considered exposed.

Impact

Any system that installs or runs the affected versions of tailwindcss-scrollbar-hide is fully compromised. The attacker can execute arbitrary code remotely, potentially leading to theft of secrets, credentials, and keys stored on the machine. The dynamic retrieval and execution of payloads from attacker-controlled infrastructure means the attacker can maintain persistent and evolving control. Removal of the package does not guarantee eradication of all malicious artifacts or backdoors, as the attacker may have established additional footholds.

Defensive guidance

Remove the affected versions of tailwindcss-scrollbar-hide immediately. Rotate all secrets, keys, and credentials that were stored or used on the compromised system, using a different, trusted machine. Because the attacker gains full control, assume the system is fully compromised and consider rebuilding or isolating it. There is no known patch or fixed version; avoid using this package entirely. Monitor for any suspicious activity related to this package and its dependencies.

Summary

The tailwindcss-scrollbar-hide npm package versions 0.0.1, 2.2.5, 2.2.6, and 2.3.0 include malicious code in dist/index.js that appends an eval(atob('...')) payload after the legitimate CSS plugin export. This payload is obfuscated using Unicode escapes and, when decoded, performs blockchain queries to Ethereum public RPC endpoints and eth.blockscout.com to retrieve the latest transaction from an attacker-controlled address. It extracts two IPv4 addresses from the transaction data, fetches second-stage payloads from these IPs over HTTP, XOR-decodes them, and executes them via eval and a detached Node.js process. This mechanism allows the attacker to dynamically rotate command and control endpoints via on-chain transactions. The package's advertised function as a pure CSS plugin is a facade for this malicious behavior. The compromise is severe, as the attacker gains full control of the infected system.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Aug 2026, 18:37 UTC

Technical details

References

Community reviews