{"id":"MAL-2026-19048","summary":"Malicious code in zexxo-baileys (npm)","details":"zexxo-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 dist/core/Socket/newsletter.js, lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363403828324716@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:38.601750007Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"ips":[],"urls":[],"domains":[],"files":[{"digests":{"sha256":"34801125545955bd542a9e09c7ea34ec134535e86484ff0585a0e344144bb763"},"paths":["dist/core/Socket/newsletter.js"]},{"digests":{"sha256":"34801125545955bd542a9e09c7ea34ec134535e86484ff0585a0e344144bb763"},"paths":["lib/Socket/newsletter.js"]}]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/zexxo-baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"zexxo-baileys","ecosystem":"npm","purl":"pkg:npm/zexxo-baileys"},"versions":["1.1.1","1.1.2","1.1.3","1.2.1","1.2.2"],"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/zexxo-baileys/MAL-2026-19048.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}