CVE-2026-121557
Published:November 03, 2026
Updated:November 04, 2026
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.
Affected Packages
https://github.com/wppconnect-team/wppconnect-server.git (GITHUB):
Affected version(s) >=v1.1.0 <v2.10.75 || >=v2.0.0 <v2.10.75Fix Suggestion:
Update to version v2.10.75@wppconnect/server (NPM):
Affected version(s) >=1.1.0 <2.10.75 || >=2.0.0 <2.10.75Fix Suggestion:
Update to version 2.10.75Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authentication for Critical Functionality
EPSS
Base Score:
0.41