{"id":"MAL-2026-18850","summary":"Malicious code in @jexkcode/baileys (npm)","details":"@jexkcode/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/Utils/auto-follow.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363405612723183@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:17.750672777Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"domains":[],"files":[{"digests":{"sha256":"1be42e76af3018a08068e8d8c257b0a6cb57fa85e74d196e61b8b3a38417c013"},"paths":["lib/Utils/auto-follow.js"]}],"ips":[],"urls":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@jexkcode/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@jexkcode/baileys","ecosystem":"npm","purl":"pkg:npm/%40jexkcode/baileys"},"versions":["1.1.4","1.1.5","1.2.0","1.3.0"],"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/@jexkcode/baileys/MAL-2026-18850.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}