GCVE-110-OSM-2026-12283

The package name typosquats @tailwindcss/forms but its main entry src/index.js is a 39 KB obfuscator.io bundle (303-entry rotating string array, hex-named identifiers, control-flow flattening) with no Tailwind/CSS functionality. On require(), the module attaches require and module to global scope, then queries Ethereum JSON-RPC endpoints (eth.publicnode.com, 1rpc.io/eth, eth-mainnet.public.blastapi.io, eth.drpc.org) and Etherscan/Blockscout txlist APIs for transactions from the hardcoded sender address 0xa322E5f39aDC2490EfD311D3080e6f0121063e1a, decompresses the returned transaction data (gzip/deflate/brotli), and passes it to code-construction and node:child_process.spawn sinks. The hardcoded sender's on-chain transactions are a mutable, attacker-controlled payload channel (EtherHiding pattern), granting arbitrary code execution on any installer that require()s the module. ENTRY src/index.js (main: src/index.js) DESTINATION - 8 fetched-payload (deobfuscated) (values recorded in verified_iocs) OBFUSCATION - IOCs Found in Deobfuscated Code in src/index.js - Obfuscation: augmented proxied array function replacements in src/index.js - Obfuscation (osm-deobfuscator): NiceGUI Multi-layer Obfuscation in src/index.js - String Array Obfuscation in src/index.js: "['eth_blockN','_process',':443/0x/cl','olKrM','BtmBu','LUUcK','h.blocksco','http..." - Obfuscation patterns: hexVariables in src/index.js - recovered 1 ipv4, 2 urls, 8 domains, 8 _domainCandidates from decoded/deobfuscated content ADDITIONAL FINDINGS - Global Require Alias in src/index.js: "global['r']=require" - Dynamic Code Execution in scripts/release-channel.js: "exec(version)" PAYLOAD FILES src/index.js