kasabaileys (npm) · Malicious Code
Affects kasabaileysSource GCVE Database
Malicious package : remove kasabaileys and rotate any secrets on hosts that installed it.
Data as of 30 Sep 2026, 16:01 UTC
Malicious package
Published to npm · OSV MAL-2026-17394
What to do
Remove kasabaileys from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmkasabaileys | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The kasabaileys npm package is a malicious fork of the Baileys WhatsApp Web library that injects code to silently subscribe the victim's WhatsApp account to attacker-controlled channels without user consent. It uses the victim's authenticated WhatsApp session to issue a covert FOLLOW query to subscribe to these channels. The target channels are obfuscated or dynamically fetched to evade detection. This behavior does not steal credentials, maintain persistence, or execute arbitrary code. Affected versions include 0.3.15, 1.0.0, 1.0.1, and 1.0.2.