{"id":"MAL-2026-18894","summary":"Malicious code in @sapp1/baileys-pro (npm)","details":"@sapp1/baileys-pro 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) 120363404389855506@newsletter, 120363407966143171@newsletter, 120363417635528181@newsletter, 120363418090359162@newsletter, 120363424788148794@newsletter, 120363425035744417@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:25.923896400Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"files":[{"paths":["lib/Socket/newsletter.js"],"digests":{"sha256":"6b475eb23cd0f5f9d943dcfff0df8ef84a84e0e86803f35fcaa64e9a3db24d25"}}],"ips":[],"urls":[],"domains":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@sapp1/baileys-pro"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@sapp1/baileys-pro","ecosystem":"npm","purl":"pkg:npm/%40sapp1/baileys-pro"},"versions":["1.0.1"],"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/@sapp1/baileys-pro/MAL-2026-18894.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}