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Malicious package

tailwindcss-hide-scrollbarnpm

Advisory published Updated

tailwindcss-hide-scrollbar is a confirmed malicious npm package (MAL-2026-13424) that typosquats a legitimate package to trick installs (malicious versions 0.0.1, 1.0.0, 2.5.3…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in tailwindcss-hide-scrollbar (npm)

MAL-2026-13424
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall tailwindcss-hide-scrollbar

What this malware does

dist/index.js exports a small tailwind scrollbar-hide plugin followed by a trailing eval(atob('<~32KB obfuscator.io payload>')) that executes on every require()/import of the package. The decoded payload pulls in http, https, zlib and child_process.spawn (with require('child_proc'+'ess') split-string obfuscation and an obfuscator.io string-array dispatcher) and contains hardcoded Ethereum JSON-RPC method names (eth_getBlockByNumber, eth_blockNumber), etherscan-style transaction listing paths (?module=account&action=...&startblock=0&endblock=99999999), a process.env.ETH_RPC_URL read, and hardcoded RPC/explorer hosts under drpc.org, publicnode.com, blockscout.com and blast-api.io. A CSS utility plugin has no legitimate need for network I/O, spawned child processes, or dynamic evaluation of an obfuscated blob. The package name inverts the word order of the established tailwind-scrollbar-hide plugin, consistent with a typosquat carrier for the loader.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

4 flagged
0.0.11.0.02.5.32.5.4

Indicators of compromise (SHA-256)

1db817934d3c5903455ce642009849bbbfd95f40be9282d837615be21a288fab
ac906893a6ea1562025bfa35bf4f1998cfd745619f21c4dc3880aa386dc3cfe1
db8f8e9574e99a7ff90f6934b87642ac2408d46e35bd267f6281d3e8061071db
a8581c269d08c9b764982b0fa395029eeb191885bcaf40b834bd3e879417aebe
d70de46065343682e4bcdc71714057c92425512f2ae1505af126fd2b85cdb079

Detection & response playbook

Typosquat
  1. Find it

    Search your lockfiles and build artifacts for tailwindcss-hide-scrollbar (4 malicious versions).

  2. If you installed it — respond

    tailwindcss-hide-scrollbar is a typosquat — you almost certainly intended a legitimately-named package. Remove tailwindcss-hide-scrollbar, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If tailwindcss-hide-scrollbar was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. tailwindcss-hide-scrollbar on npm has been identified as a malicious package (versions 0.0.1, 1.0.0, 2.5.3, 2.5.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-016546IN-MAL-2026-016545GHSA-rvh2-7968-hpfxIN-MAL-2026-016958IN-MAL-2026-016956

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks tailwindcss-hide-scrollbar-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

tailwindcss-hide-scrollbar (npm) malicious package — MAL-2026-13424 | O3 Security