{"id":"MAL-2026-18958","summary":"Malicious code in ctbaileys (npm)","details":"ctbaileys 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 invite code(s) 0029Vazo6KM8kyyJ4eWh3A25, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:30.999810341Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"domains":[],"files":[{"digests":{"sha256":"218c6eb30580660bf95cae648f0d623eda528d969e447057d2eaeae775219128"},"paths":["lib/Socket/newsletter.js"]}],"ips":[],"urls":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/ctbaileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"ctbaileys","ecosystem":"npm","purl":"pkg:npm/ctbaileys"},"versions":["1.0.13","1.0.14","1.0.5","1.0.6","1.0.7","1.0.8"],"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/ctbaileys/MAL-2026-18958.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}