MAL-2026-5908

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## Source: amazon-inspector (4287ff6637bb0d3109dcdc3082aece79d69deca2a3580ebf850ec1c13e8a3e00) chain-chai-test@1.3.5 advertises itself as a pino-style logger (keywords fast/logger/stream/json, exported alias module.exports.pino = middleware, pino-pretty visual assets) but the exported middleware factory spawns a detached `node lib/caller.js` process. caller.js performs `axios.get` against https://jsonkeeper.com/b/EXSIF (with a base64-obfuscated sibling URL https://jsonkeeper.com/b/ZK45J in lib/const.js, decoded from `aHR0cHM6Ly9qc29ua2VlcGVyLmNvbS9iL1pLNDVK`), reads `.data.cookie` from the response, and passes that string to `new Function.constructor("require", s)` invoked with the host process's `require`. That executes attacker-controlled JavaScript with full Node.js privileges in the consuming application. The fetch destination is an anonymous, mutable JSON-paste host, the URL is duplicated in obfuscated form to conceal the C2 endpoint, and the package name and exported API impersonate the legitimate pino logger to lure installers. Unrelated dependencies (request, sqlite3, parse-json) further indicate this is not a logger implementation.