CVE-2026-15291 HIGH

CVE-2026-15291: Chat Help – Click to Chat Button & Form <= 3.1.3 - Missing Authorization to Unauthenticated Sensitive Information Exposure

Vendor Themeatelier
Product ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form
Weakness CWE-862 · Missing authorization
Published July 10, 2026
Last update July 10, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

The Chat Help – Click to Chat Button & Form plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.1.3 via the REST API endpoints /wp-json/chat-help/v1/leads and /wp-json/chat-help/v1/leads/{id}. This is due to the plugin not performing any authentication and authorization checks. This makes it possible for unauthenticated attackers to extract sensitive data including customer names, email addresses, phone numbers, WhatsApp messages, complete geolocation data (IP addresses, city, country, ISP, coordinates), device fingerprinting information (browser, OS, screen resolution), and WordPress account credentials (user IDs, usernames, emails, names) for logged-in users who submit forms.

Explanation of Vulnerability in Simple Terms

02Summary

ChatHelp – Click to Chat Button is missing authorization checks on sensitive operations. An unauthenticated attacker can read confidential data without needing to log in or interact with the site. All versions up to 3.1.3 are affected. Update to a version newer than 3.1.3 when available.

What an attacker can do

03Attacker Capabilities

Read sensitive data from the site without authentication.

Potential impact on your site

04Site Impact

Visitor data, chat history, or other protected information may be exposed to anyone on the internet.

Conditions required to exploit

05Prerequisites

Network access only; no login or user interaction required.

Key dates

06Disclosure timeline

July 10, 2026 CVE published
July 10, 2026 Record updated

Related vulnerabilities

08Related CVE