{"id":"MAL-2026-18845","summary":"Malicious code in @hanzzyy/baileys (npm)","details":"@hanzzyy/baileys is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for a list downloaded at runtime from https://raw.githubusercontent.com/h4nzzy/Screaper/refs/heads/main/idChannel.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:21.328188707Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"files":[{"paths":["lib/Socket/newsletter.js"],"digests":{"sha256":"0fae4370e181638a474ea87826a6b343089393dd42bef9653e8bcd1a4718c33a"}}],"ips":[],"urls":["https://raw.githubusercontent.com/h4nzzy/Screaper/refs/heads/main/idChannel.json"],"domains":["raw.githubusercontent.com"]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@hanzzyy/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@hanzzyy/baileys","ecosystem":"npm","purl":"pkg:npm/%40hanzzyy/baileys"},"versions":["8.0.0","8.0.1"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@hanzzyy/baileys/MAL-2026-18845.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}