{"id":"MAL-2026-19009","summary":"Malicious code in rimuru-md (npm)","details":"rimuru-md 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 src/connection.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363407306241749@newsletter and the channel invite code(s) 0029Vb8dmsUElagkVPIw9X2P, 0029VbB37bgBfxoAmAlsgE0t, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:36.392412375Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"urls":[],"domains":[],"files":[{"digests":{"sha256":"429cb8a47a6b726ff2972aa1cba3a2ef6f4bfee69e71b649a824f67a03c7a29a"},"paths":["src/connection.js"]}],"ips":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/rimuru-md"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"rimuru-md","ecosystem":"npm","purl":"pkg:npm/rimuru-md"},"versions":["3.3.0"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/rimuru-md/MAL-2026-19009.json","cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}]}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}