Vulnerability MAL-2026-19042
Unknown
UNKNOWN RISK
Vulnerabilities without an assigned CVSS score. Severity is not determinable from available data.
14 days ago
October 27, 2026 at 12:00 AM UTC
Malicious code in yukistage (npm)
1.1.7
1.1.7
Summary
Malicious code in yukistage (npm)
Details
yukistage 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) 120363400911374213@newsletter, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).
References
Impacted packages
Timeline
Published
14 days ago
October 27, 2026 at 12:00 AM UTC
Last Modified
4 hours ago
November 09, 2026 at 11:15 PM UTC