MSC-2026-11442
Published:August 25, 2026
Updated:August 25, 2026
Malicious code embedded in a trojanized package. tailwind-scrollbar-hider 5.0.2 is a typosquat of tailwind-scrollbar-hide. Its dist/index.js (the package main) keeps the legitimate one-line scrollbar CSS utility but appends eval(atob(...)) that runs at import time (no install hook required). The decoded payload is obfuscated JavaScript that uses createRequire to load http/https/zlib and child_process, then reads Ethereum on-chain transactions from a hardcoded sender address to decode a command/address and spawns a detached second-stage process (blockchain-based C2 / EtherHiding). Version 5.0.2 only; 5.0.1 and 0.0.1 are clean (trust-building chain). Detected via signature high_risk_sig_mal_478 and EscalatedCombinations.
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Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Exploit Maturity
HIGH
Weakness Type (CWE)
Embedded Malicious Code