Junglewise Threat Intelligence

CVE-2026-15291: Themeatelier Chat Help information exposure in REST API leads endpoints

CVE-2026-15291 · Severity: high · CVSS 7.5 · Published 2026-07-10

Executive brief

A popular WordPress plugin used for adding chat buttons and contact forms to websites contains a security flaw that exposes sensitive visitor and customer data. An attacker can access private information such as customer names, email addresses, phone numbers, WhatsApp messages, and precise location data without needing a password. This could lead to significant privacy breaches, identity theft risks, and the exposure of internal website user account details.

Technical details

The Chat Help plugin for WordPress (versions up to 3.1.3) fails to implement proper authentication and authorization checks on its REST API endpoints, specifically /wp-json/chat-help/v1/leads and /wp-json/chat-help/v1/leads/{id}. This vulnerability (CWE-862) allows unauthenticated remote attackers to query these endpoints to extract sensitive lead data. Exposed information includes customer PII (names, emails, phone numbers), WhatsApp messages, geolocation data (IPs, coordinates, ISP), device fingerprints, and WordPress account metadata for logged-in users who interacted with the forms. A patch appears to be available in versions following 3.1.3.

Affected products

  • themeatelier Chat Help – Click to Chat Button & Form <= 3.1.3

Timeline

  • 2026-07-10: advisory: NVD publication date
  • 2026-07-10: disclosed: Wordfence disclosure date

References