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

Quick assessment

Affected
themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form是themeatelier个人开发者的一款点击聊天按钮与浮动聊天表单组件。 themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form 3.1.3及之前版本存在授权问题漏洞，该漏洞源于插件未执行身份验

CVSS 7.5 · High EPSS 0.66% · P50

Affected Version Matrix 1

VendorProduct Version RangeStatus
themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form ≤ 3.1.3 affected
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I. Basic Information for CVE-2026-15291

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Chat Help – Click to Chat Button & Form <= 3.1.3 - Missing Authorization to Unauthenticated Sensitive Information Exposure
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form是themeatelier个人开发者的一款点击聊天按钮与浮动聊天表单组件。 themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form 3.1.3及之前版本存在授权问题漏洞，该漏洞源于插件未执行身份验
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form 0 ~ 3.1.3 -

II. Public POCs for CVE-2026-15291

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III. Intelligence Information for CVE-2026-15291

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Patches & Fixes for CVE-2026-15291 (3)

Vendor Advisories for CVE-2026-15291 (1)

Other References for CVE-2026-15291 (1)

IV. Related Vulnerabilities

Same product: ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form
Same vendor: themeatelier
Same weakness: CWE-862

V. Comments for CVE-2026-15291

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