EUVD-2026-42800
GHSA-9xxg-hrhj-4868
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Remote unauthenticated GET with no interaction (AV:N/AC:L/PR:N/UI:N) fully discloses the lead store (C:H) with no data modification or outage (I:N/A:N).
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
{id} REST endpoints, which ship with no authentication or authorization checks. Any anonymous visitor can harvest customer PII - names, emails, phone numbers, WhatsApp message contents, full geolocation (IP, city, country, ISP, coordinates), device fingerprints, and even WordPress account details (user IDs, usernames, emails) for logged-in users who submitted the form. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The only prerequisite is that the target WordPress site has the Chat Help - Click to Chat Button & Form plugin (≤ 3.1.3) installed and active with the REST API reachable, which is the default WordPress state. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are largely consistent and point to a genuine, easily exploitable confidentiality risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scanning for WordPress sites running the plugin sends a single unauthenticated GET request to https://victim.example/wp-json/chat-help/v1/leads and receives the full JSON list of captured leads, then iterates /leads/{id} to pull each record. With no authentication, no user interaction, and low complexity, they harvest customer emails, phone numbers, WhatsApp messages, geolocation, and WordPress usernames for use in phishing, credential-stuffing, or resale. … |
| Remediation | Upgrade the Chat Help plugin to the first release published after 3.1.3 that contains the trunk fix (changeset 3394141); the exact patched release version is not independently confirmed from the provided data, so verify the fixed version on the plugin's WordPress.org changelog or the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/91654765-6631-4eb4-9971-32b7db7933e1) before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Identify all affected endpoints; audit recent access logs for unauthorized data harvesting; notify legal and compliance teams on breach notification obligations. …
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External POC / Exploit Code
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