{"id":"MAL-2026-18858","summary":"Malicious code in @kynna/baileys-pro (npm)","details":"@kynna/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 a list downloaded at runtime from https://github.com/kagarii/Screaper/blob/main/idChannel.json, https://raw.githubusercontent.com/kagarii/Screaper/refs/heads/main/idChannel.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:23.344952043Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"urls":["https://github.com/kagarii/Screaper/blob/main/idChannel.json","https://raw.githubusercontent.com/kagarii/Screaper/refs/heads/main/idChannel.json"],"domains":["github.com","raw.githubusercontent.com"],"files":[{"digests":{"sha256":"9cd49b9962baac1c2abc245ee262076fafe941083ba17acfded1566d011dcf6a"},"paths":["lib/Socket/newsletter.js"]},{"digests":{"sha256":"f4588f0c64b22ef19a2946a29002b14de2df8e5c8add0cf53cb4fc792542f6a5"},"paths":["lib/Socket/newsletter.js"]}],"ips":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@kynna/baileys-pro"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@kynna/baileys-pro","ecosystem":"npm","purl":"pkg:npm/%40kynna/baileys-pro"},"versions":["8.0.7","8.0.8"],"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/@kynna/baileys-pro/MAL-2026-18858.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}