{"id":"MAL-2026-18878","summary":"Malicious code in @randev404/baileys (npm)","details":"@randev404/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/custom.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363424153860594@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:24.256796646Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"files":[{"paths":["lib/custom.js"],"digests":{"sha256":"a4c955ff91009bdfd6836a1dd06a30fd0f72f86ce97d3ef81bb70725a8817d37"}}],"ips":[],"urls":[],"domains":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@randev404/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@randev404/baileys","ecosystem":"npm","purl":"pkg:npm/%40randev404/baileys"},"versions":["1.0.0"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@randev404/baileys/MAL-2026-18878.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}