{"id":"MAL-2026-18822","kind":"package","aliases":["MAL-2026-18822"],"related":[],"title":"Malicious code in @dinzid/bailstao (npm)","description":"@dinzid/bailstao 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) 120363186130999681@newsletter, 120363303656790201@newsletter, 120363315657907625@newsletter, 120363388739599619@newsletter, 120363403108262988@newsletter, 120363404743164316@newsletter and 14 more (some stored as base64 strings), 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":"@dinzid/bailstao","fixed":[],"affected":"= 0.0.7; = 0.0.8","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":"2026-11-09T23:37:51+00:00","triaged_at":"2026-11-09T23:39:36+00:00","updated_at":"2026-11-09T23:39:36+00:00","category":"package","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'-17342':98C '-18822':8A,11A '-2026':7A,10A,97C '120363186130999681':60C '120363303656790201':62C '120363315657907625':64C '120363388739599619':66C '120363403108262988':68C '120363404743164316':70C '14':73C 'account':33C 'authent':84C 'bailey':21C 'base64':78C 'behaviour':91C 'channel':36C,57C 'chosen':37C 'code':2A,45C 'connect':44C 'dinzid/bailstao':4A,12A,15C 'famili':95C 'follow':53C 'fork':18C 'id':58C 'instal':29C 'lib/socket/newsletter.js':47C 'librari':24C 'mal':6A,9A,96C 'malici':1A,13B 'mex':52C 'newslett':61C,63C,65C,67C,69C,71C 'npm':5A 'packag':14B 'phantomsub':94C 'publish':40C 'queri':54C 'send':48C 'session':85C 'silent':26C 'socket':43C 'store':76C 'string':79C 'subscrib':27C 'tell':88C 'use':80C 'victim':82C 'w':51C 'web':23C 'whatsapp':22C,32C,35C,50C 'without':87C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["bailstao"],"ptokens":["bailstao","dinzid"],"labels":["critical","malicious","npm","package"],"campaign_type":null,"search_a":"'-18822':8A,11A '-2026':7A,10A 'code':2A 'dinzid/bailstao':4A,12A 'mal':6A,9A 'malici':1A 'npm':5A","search_b":"'malici':13B 'packag':14B","search_c":"'-17342':98C '-2026':97C '120363186130999681':60C '120363303656790201':62C '120363315657907625':64C '120363388739599619':66C '120363403108262988':68C '120363404743164316':70C '14':73C 'account':33C 'authent':84C 'bailey':21C 'base64':78C 'behaviour':91C 'channel':36C,57C 'chosen':37C 'code':45C 'connect':44C 'dinzid/bailstao':15C 'famili':95C 'follow':53C 'fork':18C 'id':58C 'instal':29C 'lib/socket/newsletter.js':47C 'librari':24C 'mal':96C 'mex':52C 'newslett':61C,63C,65C,67C,69C,71C 'phantomsub':94C 'publish':40C 'queri':54C 'send':48C 'session':85C 'silent':26C 'socket':43C 'store':76C 'string':79C 'subscrib':27C 'tell':88C 'use':80C 'victim':82C 'w':51C 'web':23C 'whatsapp':22C,32C,35C,50C 'without':87C","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-2026-18822","url":"https://osv.dev/vulnerability/MAL-2026-18822","severity":"critical","published_at":"2026-10-27T00:00:00+00:00","modified_at":"2026-11-09T23:15:20+00:00","first_seen_at":"2026-11-09T23:37:51+00:00","fetched_at":"2026-11-09T23:37:51+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"}