{"id":"MAL-2026-18839","summary":"Malicious code in @gaxtamvan/baileys (npm)","details":"@gaxtamvan/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/ammarshaidi532-blip/Thunder/refs/heads/main/baileys.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:17.647341725Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"files":[{"digests":{"sha256":"583ef20d8066c2e4d339f0f687198474b219760254595991aeba22e2b494a469"},"paths":["lib/Socket/newsletter.js"]}],"ips":[],"urls":["https://raw.githubusercontent.com/ammarshaidi532-blip/Thunder/refs/heads/main/baileys.json"],"domains":["raw.githubusercontent.com"]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@gaxtamvan/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@gaxtamvan/baileys","ecosystem":"npm","purl":"pkg:npm/%40gaxtamvan/baileys"},"versions":["1.0.0"],"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/@gaxtamvan/baileys/MAL-2026-18839.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}