CVE-2026-121557

Medium

Description

WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.

SeverityMedium

CVSS5.9

Exploit probability—

ProductWppconnect-server

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Patches

github.com/wppconnect-team/wppconnect-server/pull/2702

Affected products

Product	Affected versions	Fixed in
wppconnect wppconnect-server	v ≤ 2.10.74	—

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