{"id":"MAL-2026-18962","kind":"package","aliases":["MAL-2026-18962"],"related":[],"title":"Malicious code in dct-dev-private-baileys (npm)","description":"dct-dev-private-baileys 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 ID(s) 120363407179960904@newsletter, 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":"dct-dev-private-baileys","fixed":[],"affected":"= 1.0.0","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":"2026-11-09T23:38:02+00:00","triaged_at":"2026-11-09T23:43:42+00:00","updated_at":"2026-11-09T23:43:42+00:00","category":"package","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'-17342':92C '-18962':12A,15A '-2026':11A,14A,91C '120363407179960904':72C 'account':45C 'authent':78C 'bailey':8A,27C,33C 'baileys':20A 'behaviour':85C 'channel':48C,69C 'chosen':49C 'code':2A,57C 'connect':56C 'dct':5A,17A,24C 'dct-dev-private-bailey':4A,23C 'dct-dev-private-baileys':16A 'dev':6A,18A,25C 'famili':89C 'follow':65C 'fork':30C 'id':70C 'instal':41C 'lib/socket/newsletter.js':59C 'librari':36C 'mal':10A,13A,90C 'malici':1A,21B 'mex':64C 'newslett':73C 'npm':9A 'packag':22B 'phantomsub':88C 'privat':7A,26C 'private':19A 'publish':52C 'queri':66C 'send':60C 'session':79C 'silent':38C 'socket':55C 'subscrib':39C 'tell':82C 'use':74C 'victim':76C 'w':63C 'web':35C 'whatsapp':34C,44C,47C,62C 'without':81C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["dctdevprivatebaileys"],"ptokens":["baileys","dct","dev","private"],"labels":["critical","malicious","npm","package"],"campaign_type":null,"search_a":"'-18962':12A,15A '-2026':11A,14A 'bailey':8A 'baileys':20A 'code':2A 'dct':5A,17A 'dct-dev-private-bailey':4A 'dct-dev-private-baileys':16A 'dev':6A,18A 'mal':10A,13A 'malici':1A 'npm':9A 'privat':7A 'private':19A","search_b":"'malici':21B 'packag':22B","search_c":"'-17342':92C '-2026':91C '120363407179960904':72C 'account':45C 'authent':78C 'bailey':27C,33C 'behaviour':85C 'channel':48C,69C 'chosen':49C 'code':57C 'connect':56C 'dct':24C 'dct-dev-private-bailey':23C 'dev':25C 'famili':89C 'follow':65C 'fork':30C 'id':70C 'instal':41C 'lib/socket/newsletter.js':59C 'librari':36C 'mal':90C 'mex':64C 'newslett':73C 'phantomsub':88C 'privat':26C 'publish':52C 'queri':66C 'send':60C 'session':79C 'silent':38C 'socket':55C 'subscrib':39C 'tell':82C 'use':74C 'victim':76C 'w':63C 'web':35C 'whatsapp':34C,44C,47C,62C 'without':81C","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-2026-18962","url":"https://osv.dev/vulnerability/MAL-2026-18962","severity":"critical","published_at":"2026-10-27T00:00:00+00:00","modified_at":"2026-11-09T23:15:30+00:00","first_seen_at":"2026-11-09T23:38:02+00:00","fetched_at":"2026-11-09T23:38:02+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"}