{"id":"MAL-2026-18694","summary":"Malicious code in solidity-cat (npm)","details":"solidity-cat ships index.js, which is byte-identical to the hardhat-hold payload: an obfuscator.io-style loader built on execSync and axios that fetches and runs a second stage. It is a new name for the hardhat-hold (MAL-2026-14246) campaign; the file hashes below match that record's evidence. The package presents itself as an ordinary utility, so the code runs on import or install without the user knowing.","modified":"2026-11-05T05:15:05.967049025Z","published":"2026-10-26T00:00:00Z","database_specific":{"iocs":{"urls":[],"domains":[],"files":[{"digests":{"sha256":"0d4838d9e98f1870b3c44eadb1d0fd94e71526004752160f9db4c7d065e63874"},"paths":["index.js"]},{"paths":["lib/tools.js"],"digests":{"sha256":"4e1c3058548619a9a3916869cd445d73563cbed527add4aca44067445d9c2df5"}}],"ips":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/solidity-cat"},{"type":"WEB","url":"https://osv.dev/vulnerability/MAL-2026-14246"}],"affected":[{"package":{"name":"solidity-cat","ecosystem":"npm","purl":"pkg:npm/solidity-cat"},"versions":["2.0.1"],"database_specific":{"cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/solidity-cat/MAL-2026-18694.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}