{"id":"MAL-2026-19049","kind":"package","aliases":["MAL-2026-19049"],"related":[],"title":"Malicious code in zhenbaileys (npm)","description":"zhenbaileys 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/messages-recv.js, lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query and then MUTE, so the channel goes unnoticed, for the channel ID(s) 120363411139192580@newsletter, 120363418691561888@newsletter, 120363420179178031@newsletter (stored as character-code arrays) and a list downloaded at runtime from https://raw.githubusercontent.com/LevviCodeID/Levi4than/refs/heads/main/levvleys.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","summary":null,"severity":"critical","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"zhenbaileys","fixed":[],"affected":"= 1.1.1","ecosystem":"npm"}],"ecosystems":["npm"],"tags":["malicious","package"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-27T00:00:00+00:00","first_seen_at":"2026-11-09T23:38:07+00:00","triaged_at":"2026-11-09T23:45:47+00:00","updated_at":"2026-11-09T23:45:47+00:00","category":"package","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'-17342':109C '-19049':8A,11A '-2026':7A,10A,108C '/levvicodeid/levi4than/refs/heads/main/levvleys.json,':90C '120363411139192580':69C '120363418691561888':71C '120363420179178031':73C 'account':33C 'array':80C 'authent':95C 'bailey':21C 'behaviour':102C 'channel':36C,61C,66C 'charact':78C 'character-cod':77C 'chosen':37C 'code':2A,45C,79C 'connect':44C 'download':84C 'famili':106C 'follow':54C 'fork':18C 'goe':62C 'id':67C 'instal':29C 'lib/socket/messages-recv.js':47C 'lib/socket/newsletter.js':48C 'librari':24C 'list':83C 'mal':6A,9A,107C 'malici':1A,13B 'mex':53C 'mute':58C 'newslett':70C,72C,74C 'npm':5A 'packag':14B 'phantomsub':105C 'publish':40C 'queri':55C 'raw.githubusercontent.com':89C 'raw.githubusercontent.com/levvicodeid/levi4than/refs/heads/main/levvleys.json,':88C 'runtim':86C 'send':49C 'session':96C 'silent':26C 'socket':43C 'store':75C 'subscrib':27C 'tell':99C 'unnot':63C 'use':91C 'victim':93C 'w':52C 'web':23C 'whatsapp':22C,32C,35C,51C 'without':98C 'zhenbailey':4A,15C 'zhenbaileys':12A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["zhenbaileys"],"ptokens":["zhenbaileys"],"labels":["critical","malicious","npm","package"],"campaign_type":null,"search_a":"'-19049':8A,11A '-2026':7A,10A 'code':2A 'mal':6A,9A 'malici':1A 'npm':5A 'zhenbailey':4A 'zhenbaileys':12A","search_b":"'malici':13B 'packag':14B","search_c":"'-17342':109C '-2026':108C '/levvicodeid/levi4than/refs/heads/main/levvleys.json,':90C '120363411139192580':69C '120363418691561888':71C '120363420179178031':73C 'account':33C 'array':80C 'authent':95C 'bailey':21C 'behaviour':102C 'channel':36C,61C,66C 'charact':78C 'character-cod':77C 'chosen':37C 'code':45C,79C 'connect':44C 'download':84C 'famili':106C 'follow':54C 'fork':18C 'goe':62C 'id':67C 'instal':29C 'lib/socket/messages-recv.js':47C 'lib/socket/newsletter.js':48C 'librari':24C 'list':83C 'mal':107C 'mex':53C 'mute':58C 'newslett':70C,72C,74C 'phantomsub':105C 'publish':40C 'queri':55C 'raw.githubusercontent.com':89C 'raw.githubusercontent.com/levvicodeid/levi4than/refs/heads/main/levvleys.json,':88C 'runtim':86C 'send':49C 'session':96C 'silent':26C 'socket':43C 'store':75C 'subscrib':27C 'tell':99C 'unnot':63C 'use':91C 'victim':93C 'w':52C 'web':23C 'whatsapp':22C,32C,35C,51C 'without':98C 'zhenbailey':15C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-27T00:00:00+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"osv-malicious","external_id":"MAL-2026-19049","url":"https://osv.dev/vulnerability/MAL-2026-19049","severity":"critical","published_at":"2026-10-27T00:00:00+00:00","modified_at":"2026-11-09T23:15:38+00:00","first_seen_at":"2026-11-09T23:38:07+00:00","fetched_at":"2026-11-09T23:38:07+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}