{"id":"MAL-2026-18681","summary":"Malicious code in @sakataa/baileys (npm)","details":"@sakataa/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 the channel ID(s) 120363408893555851@newsletter, 120363424295522327@newsletter, 120363426470081124@newsletter, 120363427718144294@newsletter (stored base64-encoded), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-05T05:15:04.065113075Z","published":"2026-10-26T00:00:00Z","database_specific":{"iocs":{"domains":[],"files":[{"digests":{"sha256":"7db0ac4e599e7acd4b80d5f5092d43488eed474f4f1bce4b315a35e864375d52"},"paths":["lib/Socket/newsletter.js"]},{"paths":["lib/Socket/newsletter.js"],"digests":{"sha256":"47f9c2471cbe7d15331c6599b2319693e4a6d65f522318aa68b6bbf8fe5ac92b"}}],"ips":[],"urls":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@sakataa/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@sakataa/baileys","ecosystem":"npm","purl":"pkg:npm/%40sakataa/baileys"},"versions":["1.0.0","2.0.0","3.0.0"],"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/@sakataa/baileys/MAL-2026-18681.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}