kurobails

{"modified":"2026-10-16T00:00:00Z","schema_version":"1.7.4","id":"MAL-2026-18710","summary":"Malicious code in kurobails (npm)","details":"kurobails is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own authenticated WhatsApp account to an author-chosen WhatsApp Channel. Part of the campaign OX Security documented as \"PhantomSub\" (2026-09-28): https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/ . Static read of the published 2.0.3 tarball on 2026-10-16 (not executed) found four channel JIDs (120363409616710069, 120363424058761303, 120363424944937940, 120363429340573125, @newsletter) decoded at runtime from base64 or char-code arrays, together with the newsletter FOLLOW query wired to run automatically after the socket connects, with errors suppressed. Same family as the withdrawn MAL-2026-4519 (chromestaff-baileys 1.1.3). Live on npm with no OSV record as of 2026-10-16. (Corrected 2026-10-16: an earlier version of this entry cited 120363421563597486, which in this package only labels forwarded messages.)","affected":[{"package":{"ecosystem":"npm","name":"kurobails"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]}],"references":[{"type":"REPORT","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/kurobails"}],"credits":[{"name":"OX Security","type":"FINDER","contact":["https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"]},{"name":"Patrick Duggan, DugganUSA","type":"REPORTER","contact":["mailto:patrick@dugganusa.com"]}]}