Improper Authorization in Chatwoot Signup Endpoint Allows Remote Access

Publication date: 2026-03-27

Last updated on: 2026-04-29

Assigner: VulDB

Description

A security vulnerability has been detected in chatwoot up to 4.11.1. The affected element is an unknown function of the file /app/login of the component Signup Endpoint. Such manipulation of the argument signupEnabled with the input true leads to improper authorization. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-03-27

Last Modified

2026-04-29

Generated

2026-07-06

AI Q&A

2026-03-28

EPSS Evaluated

2026-07-05

NVD

CVE-2026-4990

EUVD

EUVD-2026-16896

Affected Vendors & Products

Vendor	Product	Version / Range
chatwoot	chatwoot	to 4.11.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-285	The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CWE-266	A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability exists in chatwoot versions up to 4.11.1, specifically in the Signup Endpoint component located in the /app/login file. It involves manipulation of the argument 'signupEnabled' by setting it to true, which leads to improper authorization. This means an attacker can remotely exploit this flaw to bypass normal authorization controls.

Impact Analysis

The vulnerability allows an attacker to remotely execute an attack that results in improper authorization. This can lead to unauthorized access to the system or features that should be restricted, potentially compromising the security and integrity of the affected application.

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